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https://android.googlesource.com/kernel/common into lineage-18.1-caf-msm8998
This brings LA.UM.9.2.r1-02500-SDMxx0.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
4fd124d1546d8 Merge 4.4.258 into android-4.4-p
Change-Id: Idbae7489bc1d831a378dd60993f46139e5e28c4c
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[ Upstream commit afbc293add6466f8f3f0c3d944d85f53709c170f ]
xfrm_probe_algs() probes kernel crypto modules and changes the
availability of struct xfrm_algo_desc. But there is a small window
where ealg->available and aalg->available get changed between
count_ah_combs()/count_esp_combs() and dump_ah_combs()/dump_esp_combs(),
in this case we may allocate a smaller skb but later put a larger
amount of data and trigger the panic in skb_put().
Fix this by relaxing the checks when counting the size, that is,
skipping the test of ->available. We may waste some memory for a few
of sizeof(struct sadb_comb), but it is still much better than a panic.
Reported-by: syzbot+b2bf2652983d23734c5c@syzkaller.appspotmail.com
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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https://android.googlesource.com/kernel/common into lineage-17.1-caf-msm8998
This brings LA.UM.8.4.r1-06000-8x98.0 up to date with
https://android.googlesource.com/kernel/common/ android-4.4-p at commit:
7a9986e91f909 UPSTREAM: binder: fix UAF when releasing todo list
Conflicts:
fs/eventpoll.c
Change-Id: I77260d03cb539d7e7eefcea360aee2d59bb9e0cb
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commit 37bd22420f856fcd976989f1d4f1f7ad28e1fcac upstream.
In pfkey_dump() dplen and splen can both be specified to access the
xfrm_address_t structure out of bounds in__xfrm_state_filter_match()
when it calls addr_match() with the indexes. Return EINVAL if either
are out of range.
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Cc: netdev@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: kernel-team@android.com
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Jakub Kicinski <kuba@kernel.org>
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-3edc5af
Linux 4.4.193
vhost: make sure log_num < in_num
af_packet: tone down the Tx-ring unsupported spew.
x86, boot: Remove multiple copy of static function sanitize_boot_params()
clk: s2mps11: Add used attribute to s2mps11_dt_match
scripts/decode_stacktrace: match basepath using shell prefix operator, not regex
vhost/test: fix build for vhost test
xfrm: clean up xfrm protocol checks
ALSA: hda/realtek - Fix overridden device-specific initialization
ALSA: hda - Fix potential endless loop at applying quirks
ANDROID: regression introduced override_creds=off
Change-Id: I2a9b4c63e3572bbfe461ace3ccc41451a6ef700c
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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commit dbb2483b2a46fbaf833cfb5deb5ed9cace9c7399 upstream.
In commit 6a53b7593233 ("xfrm: check id proto in validate_tmpl()")
I introduced a check for xfrm protocol, but according to Herbert
IPSEC_PROTO_ANY should only be used as a wildcard for lookup, so
it should be removed from validate_tmpl().
And, IPSEC_PROTO_ANY is expected to only match 3 IPSec-specific
protocols, this is why xfrm_state_flush() could still miss
IPPROTO_ROUTING, which leads that those entries are left in
net->xfrm.state_all before exit net. Fix this by replacing
IPSEC_PROTO_ANY with zero.
This patch also extracts the check from validate_tmpl() to
xfrm_id_proto_valid() and uses it in parse_ipsecrequest().
With this, no other protocols should be added into xfrm.
Fixes: 6a53b7593233 ("xfrm: check id proto in validate_tmpl()")
Reported-by: syzbot+0bf0519d6e0de15914fe@syzkaller.appspotmail.com
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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* refs/heads/tmp-8eb3d65
Linux 4.4.187
ceph: hold i_ceph_lock when removing caps for freeing inode
drivers/pps/pps.c: clear offset flags in PPS_SETPARAMS ioctl
sched/fair: Don't free p->numa_faults with concurrent readers
Bluetooth: hci_uart: check for missing tty operations
media: radio-raremono: change devm_k*alloc to k*alloc
media: cpia2_usb: first wake up, then free in disconnect
ISDN: hfcsusb: checking idx of ep configuration
tcp: reset sk_send_head in tcp_write_queue_purge
ipv6: check sk sk_type and protocol early in ip_mroute_set/getsockopt
mm, vmstat: make quiet_vmstat lighter
vmstat: Remove BUG_ON from vmstat_update
access: avoid the RCU grace period for the temporary subjective credentials
powerpc/tm: Fix oops on sigreturn on systems without TM
ALSA: hda - Add a conexant codec entry to let mute led work
ALSA: line6: Fix wrong altsetting for LINE6_PODHD500_1
hpet: Fix division by zero in hpet_time_div()
x86/speculation/mds: Apply more accurate check on hypervisor platform
x86/sysfb_efi: Add quirks for some devices with swapped width and height
usb: pci-quirks: Correct AMD PLL quirk detection
usb: wusbcore: fix unbalanced get/put cluster_id
locking/lockdep: Hide unused 'class' variable
locking/lockdep: Fix lock used or unused stats error
mm/mmu_notifier: use hlist_add_head_rcu()
9p: pass the correct prototype to read_cache_page
mm/kmemleak.c: fix check for softirq context
sh: prevent warnings when using iounmap
powerpc/eeh: Handle hugepages in ioremap space
mailbox: handle failed named mailbox channel request
f2fs: avoid out-of-range memory access
perf test mmap-thread-lookup: Initialize variable to suppress memory sanitizer warning
kallsyms: exclude kasan local symbols on s390
serial: sh-sci: Fix TX DMA buffer flushing and workqueue races
powerpc/4xx/uic: clear pending interrupt after irq type/pol change
um: Silence lockdep complaint about mmap_sem
mfd: arizona: Fix undefined behavior
mfd: core: Set fwnode for created devices
recordmcount: Fix spurious mcount entries on powerpc
iio: iio-utils: Fix possible incorrect mask calculation
PCI: sysfs: Ignore lockdep for remove attribute
powerpc/pci/of: Fix OF flags parsing for 64bit BARs
usb: gadget: Zero ffs_io_data
phy: renesas: rcar-gen2: Fix memory leak at error paths
drm/virtio: Add memory barriers for capset cache.
tty: serial: msm_serial: avoid system lockup condition
tty/serial: digicolor: Fix digicolor-usart already registered warning
memstick: Fix error cleanup path of memstick_init
tty: serial: cpm_uart - fix init when SMC is relocated
pinctrl: rockchip: fix leaked of_node references
tty: max310x: Fix invalid baudrate divisors calculator
usb: core: hub: Disable hub-initiated U1/U2
drm/panel: simple: Fix panel_simple_dsi_probe
nfsd: Fix overflow causing non-working mounts on 1 TB machines
nfsd: fix performance-limiting session calculation
nfsd: give out fewer session slots as limit approaches
nfsd: increase DRC cache limit
NFSv4: Fix open create exclusive when the server reboots
elevator: fix truncation of icq_cache_name
net: bridge: stp: don't cache eth dest pointer before skb pull
net: bridge: mcast: fix stale ipv6 hdr pointer when handling v6 query
net: bridge: mcast: fix stale nsrcs pointer in igmp3/mld2 report handling
bonding: validate ip header before check IPPROTO_IGMP
tcp: Reset bytes_acked and bytes_received when disconnecting
netrom: hold sock when setting skb->destructor
netrom: fix a memory leak in nr_rx_frame()
sky2: Disable MSI on ASUS P6T
nfc: fix potential illegal memory access
net: neigh: fix multiple neigh timer scheduling
net: bcmgenet: use promisc for unsupported filters
ipv4: don't set IPv6 only flags to IPv4 addresses
caif-hsi: fix possible deadlock in cfhsi_exit_module()
bnx2x: Prevent load reordering in tx completion processing
dm bufio: fix deadlock with loop device
usb: Handle USB3 remote wakeup for LPM enabled devices correctly
Bluetooth: Add SMP workaround Microsoft Surface Precision Mouse bug
intel_th: msu: Fix single mode with disabled IOMMU
eCryptfs: fix a couple type promotion bugs
powerpc/watchpoint: Restore NV GPRs while returning from exception
powerpc/32s: fix suspend/resume when IBATs 4-7 are used
parisc: Fix kernel panic due invalid values in IAOQ0 or IAOQ1
gpu: ipu-v3: ipu-ic: Fix saturation bit offset in TPMEM
coda: pass the host file in vma->vm_file on mmap
floppy: fix out-of-bounds read in copy_buffer
floppy: fix invalid pointer dereference in drive_name
floppy: fix out-of-bounds read in next_valid_format
floppy: fix div-by-zero in setup_format_params
take floppy compat ioctls to sodding floppy.c
PCI: Do not poll for PME if the device is in D3cold
9p/virtio: Add cleanup path in p9_virtio_init
padata: use smp_mb in padata_reorder to avoid orphaned padata jobs
drm/nouveau/i2c: Enable i2c pads & busses during preinit
KVM: x86/vPMU: refine kvm_pmu err msg when event creation failed
media: coda: Remove unbalanced and unneeded mutex unlock
media: v4l2: Test type instead of cfg->type in v4l2_ctrl_new_custom()
ALSA: seq: Break too long mutex context in the write loop
lib/scatterlist: Fix mapping iterator when sg->offset is greater than PAGE_SIZE
NFSv4: Handle the special Linux file open access mode
tracing/snapshot: Resize spare buffer if size changed
regulator: s2mps11: Fix buck7 and buck8 wrong voltages
Input: gtco - bounds check collection indent level
crypto: arm64/sha2-ce - correct digest for empty data in finup
crypto: arm64/sha1-ce - correct digest for empty data in finup
crypto: ghash - fix unaligned memory access in ghash_setkey()
Bluetooth: validate BLE connection interval updates
Bluetooth: Check state in l2cap_disconnect_rsp
Bluetooth: 6lowpan: search for destination address in all peers
Bluetooth: hci_bcsp: Fix memory leak in rx_skb
bcache: check c->gc_thread by IS_ERR_OR_NULL in cache_set_flush()
EDAC: Fix global-out-of-bounds write when setting edac_mc_poll_msec
ixgbe: Check DDM existence in transceiver before access
rslib: Fix handling of of caller provided syndrome
rslib: Fix decoding of shortened codes
ath10k: fix PCIE device wake up failed
mt7601u: fix possible memory leak when the device is disconnected
x86/build: Add 'set -e' to mkcapflags.sh to delete broken capflags.c
mt7601u: do not schedule rx_tasklet when the device has been disconnected
media: coda: increment sequence offset for the last returned frame
media: coda: fix mpeg2 sequence number handling
acpi/arm64: ignore 5.1 FADTs that are reported as 5.0
timer_list: Guard procfs specific code
ntp: Limit TAI-UTC offset
media: i2c: fix warning same module names
EDAC/sysfs: Fix memory leak when creating a csrow object
vhost_net: disable zerocopy by default
perf evsel: Make perf_evsel__name() accept a NULL argument
xfrm: fix sa selector validation
rcu: Force inlining of rcu_read_lock()
bpf: silence warning messages in core
regmap: fix bulk writes on paged registers
gpio: omap: ensure irq is enabled before wakeup
gpio: omap: fix lack of irqstatus_raw0 for OMAP4
perf test 6: Fix missing kvm module load for s390
s390/qdio: handle PENDING state for QEBSM devices
net: axienet: Fix race condition causing TX hang
net: fec: Do not use netdev messages too early
cpupower : frequency-set -r option misses the last cpu in related cpu list
media: wl128x: Fix some error handling in fm_v4l2_init_video_device()
locking/lockdep: Fix merging of hlocks with non-zero references
tua6100: Avoid build warnings.
net: phy: Check against net_device being NULL
media: staging: media: davinci_vpfe: - Fix for memory leak if decoder initialization fails.
xfrm: Fix xfrm sel prefix length validation
af_key: fix leaks in key_pol_get_resp and dump_sp.
signal/pid_namespace: Fix reboot_pid_ns to use send_sig not force_sig
net: stmmac: dwmac1000: Clear unused address entries
media: vpss: fix a potential NULL pointer dereference
media: marvell-ccic: fix DMA s/g desc number calculation
crypto: talitos - fix skcipher failure due to wrong output IV
media: dvb: usb: fix use after free in dvb_usb_device_exit
batman-adv: fix for leaked TVLV handler.
ath: DFS JP domain W56 fixed pulse type 3 RADAR detection
ath6kl: add some bounds checking
ath9k: Check for errors when reading SREV register
ath10k: Do not send probe response template for mesh
dmaengine: imx-sdma: fix use-after-free on probe error path
MIPS: fix build on non-linux hosts
MIPS: ath79: fix ar933x uart parity mode
f2fs: use EINVAL for superblock with invalid magic
f2fs: fix to read source block before invalidating it
f2fs: remove redundant check from f2fs_setflags_common()
f2fs: use generic checking and prep function for FS_IOC_SETFLAGS
ANDROID: overlayfs: Fix a regression in commit b24be4acd
ANDROID: xfrm: remove in_compat_syscall() checks
ANDROID: enable CONFIG_RTC_DRV_TEST on cuttlefish
BACKPORT: binder: Set end of SG buffer area properly.
f2fs: improve print log in f2fs_sanity_check_ckpt()
f2fs: avoid out-of-range memory access
f2fs: fix to avoid long latency during umount
f2fs: allow all the users to pin a file
f2fs: support swap file w/ DIO
f2fs: allocate blocks for pinned file
f2fs: fix is_idle() check for discard type
f2fs: add a rw_sem to cover quota flag changes
f2fs: set SBI_NEED_FSCK for xattr corruption case
f2fs: use generic EFSBADCRC/EFSCORRUPTED
f2fs: Use DIV_ROUND_UP() instead of open-coding
f2fs: print kernel message if filesystem is inconsistent
f2fs: introduce f2fs_<level> macros to wrap f2fs_printk()
f2fs: avoid get_valid_blocks() for cleanup
f2fs: ioctl for removing a range from F2FS
f2fs: only set project inherit bit for directory
f2fs: separate f2fs i_flags from fs_flags and ext4 i_flags
f2fs: Add option to limit required GC for checkpoint=disable
f2fs: Fix accounting for unusable blocks
f2fs: Fix root reserved on remount
f2fs: Lower threshold for disable_cp_again
f2fs: fix sparse warning
f2fs: fix f2fs_show_options to show nodiscard mount option
f2fs: add error prints for debugging mount failure
f2fs: fix to do sanity check on segment bitmap of LFS curseg
f2fs: add missing sysfs entries in documentation
f2fs: fix to avoid deadloop if data_flush is on
f2fs: always assume that the device is idle under gc_urgent
f2fs: add bio cache for IPU
f2fs: allow ssr block allocation during checkpoint=disable period
f2fs: fix to check layout on last valid checkpoint park
Conflicts:
drivers/net/wireless/ath/ath10k/hw.c
fs/ecryptfs/crypto.c
mm/vmstat.c
Change-Id: Ic268e845f4992a9dbdf5c985cfe9359a56a5c72e
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
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[ Upstream commit 7c80eb1c7e2b8420477fbc998971d62a648035d9 ]
In both functions, if pfkey_xfrm_policy2msg failed we leaked the newly
allocated sk_buff. Free it on error.
Fixes: 55569ce256ce ("Fix conversion between IPSEC_MODE_xxx and XFRM_MODE_xxx.")
Reported-by: syzbot+4f0529365f7f2208d9f0@syzkaller.appspotmail.com
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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Attempting to avoid cloning the skb when broadcasting by inflating
the refcount with sock_hold/sock_put while under RCU lock is dangerous
and violates RCU principles. It leads to subtle race conditions when
attempting to free the SKB, as we may reference sockets that have
already been freed by the stack.
Unable to handle kernel paging request at virtual address 6b6b6b6b6b6c4b
[006b6b6b6b6b6c4b] address between user and kernel address ranges
Internal error: Oops: 96000004 [#1] PREEMPT SMP
task: fffffff78f65b380 task.stack: ffffff8049a88000
pc : sock_rfree+0x38/0x6c
lr : skb_release_head_state+0x6c/0xcc
Process repro (pid: 7117, stack limit = 0xffffff8049a88000)
Call trace:
sock_rfree+0x38/0x6c
skb_release_head_state+0x6c/0xcc
skb_release_all+0x1c/0x38
__kfree_skb+0x1c/0x30
kfree_skb+0xd0/0xf4
pfkey_broadcast+0x14c/0x18c
pfkey_sendmsg+0x1d8/0x408
sock_sendmsg+0x44/0x60
___sys_sendmsg+0x1d0/0x2a8
__sys_sendmsg+0x64/0xb4
SyS_sendmsg+0x34/0x4c
el0_svc_naked+0x34/0x38
Kernel panic - not syncing: Fatal exception
CRs-Fixed: 2251019
Change-Id: Ib3b01f941a34a7df61fe9445f746b7df33f4656a
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
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commit 4b66af2d6356a00e94bcdea3e7fea324e8b5c6f4 upstream.
Key extensions (struct sadb_key) include a user-specified number of key
bits. The kernel uses that number to determine how much key data to copy
out of the message in pfkey_msg2xfrm_state().
The length of the sadb_key message must be verified to be long enough,
even in the case of SADB_X_AALG_NULL. Furthermore, the sadb_key_len value
must be long enough to include both the key data and the struct sadb_key
itself.
Introduce a helper function verify_key_len(), and call it from
parse_exthdrs() where other exthdr types are similarly checked for
correctness.
Signed-off-by: Kevin Easton <kevin@guarana.org>
Reported-by: syzbot+5022a34ca5a3d49b84223653fab632dfb7b4cf37@syzkaller.appspotmail.com
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Cc: Zubin Mithra <zsm@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit d90c902449a7561f1b1d58ba5a0d11728ce8b0b2 ]
The sadb_x_sec_len is stored in the unit 'byte divided by eight'.
So we have to multiply this value by eight before we can do
size checks. Otherwise we may get a slab-out-of-bounds when
we memcpy the user sec_ctx.
Fixes: df71837d502 ("[LSM-IPSec]: Security association restriction.")
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Tested-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 4e765b4972af7b07adcb1feb16e7a525ce1f6b28 upstream.
If a message sent to a PF_KEY socket ended with an incomplete extension
header (fewer than 4 bytes remaining), then parse_exthdrs() read past
the end of the message, into uninitialized memory. Fix it by returning
-EINVAL in this case.
Reproducer:
#include <linux/pfkeyv2.h>
#include <sys/socket.h>
#include <unistd.h>
int main()
{
int sock = socket(PF_KEY, SOCK_RAW, PF_KEY_V2);
char buf[17] = { 0 };
struct sadb_msg *msg = (void *)buf;
msg->sadb_msg_version = PF_KEY_V2;
msg->sadb_msg_type = SADB_DELETE;
msg->sadb_msg_len = 2;
write(sock, buf, 17);
}
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 06b335cb51af018d5feeff5dd4fd53847ddb675a upstream.
If a message sent to a PF_KEY socket ended with one of the extensions
that takes a 'struct sadb_address' but there were not enough bytes
remaining in the message for the ->sa_family member of the 'struct
sockaddr' which is supposed to follow, then verify_address_len() read
past the end of the message, into uninitialized memory. Fix it by
returning -EINVAL in this case.
This bug was found using syzkaller with KMSAN.
Reproducer:
#include <linux/pfkeyv2.h>
#include <sys/socket.h>
#include <unistd.h>
int main()
{
int sock = socket(PF_KEY, SOCK_RAW, PF_KEY_V2);
char buf[24] = { 0 };
struct sadb_msg *msg = (void *)buf;
struct sadb_address *addr = (void *)(msg + 1);
msg->sadb_msg_version = PF_KEY_V2;
msg->sadb_msg_type = SADB_DELETE;
msg->sadb_msg_len = 3;
addr->sadb_address_len = 1;
addr->sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
write(sock, buf, 24);
}
Reported-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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[ Upstream commit 36f41f8fc6d8aa9f8c9072d66ff7cf9055f5e69b ]
pfkey_broadcast() might be called from non process contexts,
we can not use GFP_KERNEL in these cases [1].
This patch partially reverts commit ba51b6be38c1 ("net: Fix RCU splat in
af_key"), only keeping the GFP_ATOMIC forcing under rcu_read_lock()
section.
[1] : syzkaller reported :
in_atomic(): 1, irqs_disabled(): 0, pid: 2932, name: syzkaller183439
3 locks held by syzkaller183439/2932:
#0: (&net->xfrm.xfrm_cfg_mutex){+.+.+.}, at: [<ffffffff83b43888>] pfkey_sendmsg+0x4c8/0x9f0 net/key/af_key.c:3649
#1: (&pfk->dump_lock){+.+.+.}, at: [<ffffffff83b467f6>] pfkey_do_dump+0x76/0x3f0 net/key/af_key.c:293
#2: (&(&net->xfrm.xfrm_policy_lock)->rlock){+...+.}, at: [<ffffffff83957632>] spin_lock_bh include/linux/spinlock.h:304 [inline]
#2: (&(&net->xfrm.xfrm_policy_lock)->rlock){+...+.}, at: [<ffffffff83957632>] xfrm_policy_walk+0x192/0xa30 net/xfrm/xfrm_policy.c:1028
CPU: 0 PID: 2932 Comm: syzkaller183439 Not tainted 4.13.0-rc4+ #24
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:16 [inline]
dump_stack+0x194/0x257 lib/dump_stack.c:52
___might_sleep+0x2b2/0x470 kernel/sched/core.c:5994
__might_sleep+0x95/0x190 kernel/sched/core.c:5947
slab_pre_alloc_hook mm/slab.h:416 [inline]
slab_alloc mm/slab.c:3383 [inline]
kmem_cache_alloc+0x24b/0x6e0 mm/slab.c:3559
skb_clone+0x1a0/0x400 net/core/skbuff.c:1037
pfkey_broadcast_one+0x4b2/0x6f0 net/key/af_key.c:207
pfkey_broadcast+0x4ba/0x770 net/key/af_key.c:281
dump_sp+0x3d6/0x500 net/key/af_key.c:2685
xfrm_policy_walk+0x2f1/0xa30 net/xfrm/xfrm_policy.c:1042
pfkey_dump_sp+0x42/0x50 net/key/af_key.c:2695
pfkey_do_dump+0xaa/0x3f0 net/key/af_key.c:299
pfkey_spddump+0x1a0/0x210 net/key/af_key.c:2722
pfkey_process+0x606/0x710 net/key/af_key.c:2814
pfkey_sendmsg+0x4d6/0x9f0 net/key/af_key.c:3650
sock_sendmsg_nosec net/socket.c:633 [inline]
sock_sendmsg+0xca/0x110 net/socket.c:643
___sys_sendmsg+0x755/0x890 net/socket.c:2035
__sys_sendmsg+0xe5/0x210 net/socket.c:2069
SYSC_sendmsg net/socket.c:2080 [inline]
SyS_sendmsg+0x2d/0x50 net/socket.c:2076
entry_SYSCALL_64_fastpath+0x1f/0xbe
RIP: 0033:0x445d79
RSP: 002b:00007f32447c1dc8 EFLAGS: 00000202 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000445d79
RDX: 0000000000000000 RSI: 000000002023dfc8 RDI: 0000000000000008
RBP: 0000000000000086 R08: 00007f32447c2700 R09: 00007f32447c2700
R10: 00007f32447c2700 R11: 0000000000000202 R12: 0000000000000000
R13: 00007ffe33edec4f R14: 00007f32447c29c0 R15: 0000000000000000
Fixes: ba51b6be38c1 ("net: Fix RCU splat in af_key")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Cc: David Ahern <dsa@cumulusnetworks.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
|
|
commit 89e357d83c06b6fac581c3ca7f0ee3ae7e67109e upstream.
A dump may come in the middle of another dump, modifying its dump
structure members. This race condition will result in NULL pointer
dereference in kernel. So add a lock to prevent that race.
Fixes: 83321d6b9872 ("[AF_KEY]: Dump SA/SP entries non-atomically")
Signed-off-by: Yuejie Shi <syjcnss@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Mark Salyzyn <salyzyn@android.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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|
commit 096f41d3a8fcbb8dde7f71379b1ca85fe213eded upstream.
The parsing of sadb_x_ipsecrequest is broken in a number of ways.
First of all we're not verifying sadb_x_ipsecrequest_len. This
is needed when the structure carries addresses at the end. Worse
we don't even look at the length when we parse those optional
addresses.
The migration code had similar parsing code that's better but
it also has some deficiencies. The length is overcounted first
of all as it includes the header itself. It also fails to check
the length before dereferencing the sa_family field.
This patch fixes those problems in parse_sockaddr_pair and then
uses it in parse_ipsecrequest.
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit 1e3d0c2c70cd3edb5deed186c5f5c75f2b84a633 upstream.
There are some missing error codes here so we accidentally return NULL
instead of an error pointer. It results in a NULL pointer dereference.
Fixes: df71837d5024 ("[LSM-IPSec]: Security association restriction.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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commit e747f64336fc15e1c823344942923195b800aa1e upstream.
The default error code in pfkey_msg2xfrm_state() is -ENOBUFS. We
added a new call to security_xfrm_state_alloc() which sets "err" to zero
so there several places where we can return ERR_PTR(0) if kmalloc()
fails. The caller is expecting error pointers so it leads to a NULL
dereference.
Fixes: df71837d5024 ("[LSM-IPSec]: Security association restriction.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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|
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Hit the following splat testing VRF change for ipsec:
[ 113.475692] ===============================
[ 113.476194] [ INFO: suspicious RCU usage. ]
[ 113.476667] 4.2.0-rc6-1+deb7u2+clUNRELEASED #3.2.65-1+deb7u2+clUNRELEASED Not tainted
[ 113.477545] -------------------------------
[ 113.478013] /work/monster-14/dsa/kernel.git/include/linux/rcupdate.h:568 Illegal context switch in RCU read-side critical section!
[ 113.479288]
[ 113.479288] other info that might help us debug this:
[ 113.479288]
[ 113.480207]
[ 113.480207] rcu_scheduler_active = 1, debug_locks = 1
[ 113.480931] 2 locks held by setkey/6829:
[ 113.481371] #0: (&net->xfrm.xfrm_cfg_mutex){+.+.+.}, at: [<ffffffff814e9887>] pfkey_sendmsg+0xfb/0x213
[ 113.482509] #1: (rcu_read_lock){......}, at: [<ffffffff814e767f>] rcu_read_lock+0x0/0x6e
[ 113.483509]
[ 113.483509] stack backtrace:
[ 113.484041] CPU: 0 PID: 6829 Comm: setkey Not tainted 4.2.0-rc6-1+deb7u2+clUNRELEASED #3.2.65-1+deb7u2+clUNRELEASED
[ 113.485422] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.7.5.1-0-g8936dbb-20141113_115728-nilsson.home.kraxel.org 04/01/2014
[ 113.486845] 0000000000000001 ffff88001d4c7a98 ffffffff81518af2 ffffffff81086962
[ 113.487732] ffff88001d538480 ffff88001d4c7ac8 ffffffff8107ae75 ffffffff8180a154
[ 113.488628] 0000000000000b30 0000000000000000 00000000000000d0 ffff88001d4c7ad8
[ 113.489525] Call Trace:
[ 113.489813] [<ffffffff81518af2>] dump_stack+0x4c/0x65
[ 113.490389] [<ffffffff81086962>] ? console_unlock+0x3d6/0x405
[ 113.491039] [<ffffffff8107ae75>] lockdep_rcu_suspicious+0xfa/0x103
[ 113.491735] [<ffffffff81064032>] rcu_preempt_sleep_check+0x45/0x47
[ 113.492442] [<ffffffff8106404d>] ___might_sleep+0x19/0x1c8
[ 113.493077] [<ffffffff81064268>] __might_sleep+0x6c/0x82
[ 113.493681] [<ffffffff81133190>] cache_alloc_debugcheck_before.isra.50+0x1d/0x24
[ 113.494508] [<ffffffff81134876>] kmem_cache_alloc+0x31/0x18f
[ 113.495149] [<ffffffff814012b5>] skb_clone+0x64/0x80
[ 113.495712] [<ffffffff814e6f71>] pfkey_broadcast_one+0x3d/0xff
[ 113.496380] [<ffffffff814e7b84>] pfkey_broadcast+0xb5/0x11e
[ 113.497024] [<ffffffff814e82d1>] pfkey_register+0x191/0x1b1
[ 113.497653] [<ffffffff814e9770>] pfkey_process+0x162/0x17e
[ 113.498274] [<ffffffff814e9895>] pfkey_sendmsg+0x109/0x213
In pfkey_sendmsg the net mutex is taken and then pfkey_broadcast takes
the RCU lock.
Since pfkey_broadcast takes the RCU lock the allocation argument is
pointless since GFP_ATOMIC must be used between the rcu_read_{,un}lock.
The one call outside of rcu can be done with GFP_KERNEL.
Fixes: 7f6b9dbd5afbd ("af_key: locking change")
Signed-off-by: David Ahern <dsa@cumulusnetworks.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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|
Pull networking updates from David Miller:
1) Add TX fast path in mac80211, from Johannes Berg.
2) Add TSO/GRO support to ibmveth, from Thomas Falcon
3) Move away from cached routes in ipv6, just like ipv4, from Martin
KaFai Lau.
4) Lots of new rhashtable tests, from Thomas Graf.
5) Run ingress qdisc lockless, from Alexei Starovoitov.
6) Allow servers to fetch TCP packet headers for SYN packets of new
connections, for fingerprinting. From Eric Dumazet.
7) Add mode parameter to pktgen, for testing receive. From Alexei
Starovoitov.
8) Cache access optimizations via simplifications of build_skb(), from
Alexander Duyck.
9) Move page frag allocator under mm/, also from Alexander.
10) Add xmit_more support to hv_netvsc, from KY Srinivasan.
11) Add a counter guard in case we try to perform endless reclassify
loops in the packet scheduler.
12) Extern flow dissector to be programmable and use it in new "Flower"
classifier. From Jiri Pirko.
13) AF_PACKET fanout rollover fixes, performance improvements, and new
statistics. From Willem de Bruijn.
14) Add netdev driver for GENEVE tunnels, from John W Linville.
15) Add ingress netfilter hooks and filtering, from Pablo Neira Ayuso.
16) Fix handling of epoll edge triggers in TCP, from Eric Dumazet.
17) Add an ECN retry fallback for the initial TCP handshake, from Daniel
Borkmann.
18) Add tail call support to BPF, from Alexei Starovoitov.
19) Add several pktgen helper scripts, from Jesper Dangaard Brouer.
20) Add zerocopy support to AF_UNIX, from Hannes Frederic Sowa.
21) Favor even port numbers for allocation to connect() requests, and
odd port numbers for bind(0), in an effort to help avoid
ip_local_port_range exhaustion. From Eric Dumazet.
22) Add Cavium ThunderX driver, from Sunil Goutham.
23) Allow bpf programs to access skb_iif and dev->ifindex SKB metadata,
from Alexei Starovoitov.
24) Add support for T6 chips in cxgb4vf driver, from Hariprasad Shenai.
25) Double TCP Small Queues default to 256K to accomodate situations
like the XEN driver and wireless aggregation. From Wei Liu.
26) Add more entropy inputs to flow dissector, from Tom Herbert.
27) Add CDG congestion control algorithm to TCP, from Kenneth Klette
Jonassen.
28) Convert ipset over to RCU locking, from Jozsef Kadlecsik.
29) Track and act upon link status of ipv4 route nexthops, from Andy
Gospodarek.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1670 commits)
bridge: vlan: flush the dynamically learned entries on port vlan delete
bridge: multicast: add a comment to br_port_state_selection about blocking state
net: inet_diag: export IPV6_V6ONLY sockopt
stmmac: troubleshoot unexpected bits in des0 & des1
net: ipv4 sysctl option to ignore routes when nexthop link is down
net: track link-status of ipv4 nexthops
net: switchdev: ignore unsupported bridge flags
net: Cavium: Fix MAC address setting in shutdown state
drivers: net: xgene: fix for ACPI support without ACPI
ip: report the original address of ICMP messages
net/mlx5e: Prefetch skb data on RX
net/mlx5e: Pop cq outside mlx5e_get_cqe
net/mlx5e: Remove mlx5e_cq.sqrq back-pointer
net/mlx5e: Remove extra spaces
net/mlx5e: Avoid TX CQE generation if more xmit packets expected
net/mlx5e: Avoid redundant dev_kfree_skb() upon NOP completion
net/mlx5e: Remove re-assignment of wq type in mlx5e_enable_rq()
net/mlx5e: Use skb_shinfo(skb)->gso_segs rather than counting them
net/mlx5e: Static mapping of netdev priv resources to/from netdev TX queues
net/mlx4_en: Use HW counters for rx/tx bytes/packets in PF device
...
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This patch adds IV generator information to xfrm_state. This
is currently obtained from our own list of algorithm descriptions.
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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In preparation for changing how struct net is refcounted
on kernel sockets pass the knowledge that we are creating
a kernel socket from sock_create_kern through to sk_alloc.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In many places, the a6 field is typecasted to struct in6_addr. As the
fields are in union anyway, just add in6_addr type to the union and
get rid of the typecasting.
Modifying the uapi header is okay, the union has still the same size.
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After TIPC doesn't depend on iocb argument in its internal
implementations of sendmsg() and recvmsg() hooks defined in proto
structure, no any user is using iocb argument in them at all now.
Then we can drop the redundant iocb argument completely from kinds of
implementations of both sendmsg() and recvmsg() in the entire
networking stack.
Cc: Christoph Hellwig <hch@lst.de>
Suggested-by: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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This encapsulates all of the skb_copy_datagram_iovec() callers
with call argument signature "skb, offset, msghdr->msg_iov, length".
When we move to iov_iters in the networking, the iov_iter object will
sit in the msghdr.
Having a helper like this means there will be less places to touch
during that transformation.
Based upon descriptions and patch from Al Viro.
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
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This patch replaces a comma between expression statements by a semicolon.
A simplified version of the semantic patch that performs this
transformation is as follows:
// <smpl>
@r@
expression e1,e2,e;
type T;
identifier i;
@@
e1
-,
+;
e2;
// </smpl>
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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|
Commit f1370cc4 "xfrm: Remove useless secid field from xfrm_audit." changed
"struct xfrm_audit" to have either
{ audit_get_loginuid(current) / audit_get_sessionid(current) } or
{ INVALID_UID / -1 } pair.
This means that we can represent "struct xfrm_audit" as "bool".
This patch replaces "struct xfrm_audit" argument with "bool".
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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It seems to me that commit ab5f5e8b "[XFRM]: xfrm audit calls" is doing
something strange at xfrm_audit_helper_usrinfo().
If secid != 0 && security_secid_to_secctx(secid) != 0, the caller calls
audit_log_task_context() which basically does
secid != 0 && security_secid_to_secctx(secid) == 0 case
except that secid is obtained from current thread's context.
Oh, what happens if secid passed to xfrm_audit_helper_usrinfo() was
obtained from other thread's context? It might audit current thread's
context rather than other thread's context if security_secid_to_secctx()
in xfrm_audit_helper_usrinfo() failed for some reason.
Then, are all the caller of xfrm_audit_helper_usrinfo() passing either
secid obtained from current thread's context or secid == 0?
It seems to me that they are.
If I didn't miss something, we don't need to pass secid to
xfrm_audit_helper_usrinfo() because audit_log_task_context() will
obtain secid from current thread's context.
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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Several spots in the kernel perform a sequence like:
skb_queue_tail(&sk->s_receive_queue, skb);
sk->sk_data_ready(sk, skb->len);
But at the moment we place the SKB onto the socket receive queue it
can be consumed and freed up. So this skb->len access is potentially
to freed up memory.
Furthermore, the skb->len can be modified by the consumer so it is
possible that the value isn't accurate.
And finally, no actual implementation of this callback actually uses
the length argument. And since nobody actually cared about it's
value, lots of call sites pass arbitrary values in such as '0' and
even '1'.
So just remove the length argument from the callback, that way there
is no confusion whatsoever and all of these use-after-free cases get
fixed as a side effect.
Based upon a patch by Eric Dumazet and his suggestion to audit this
issue tree-wide.
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
Conflicts:
Documentation/devicetree/bindings/net/micrel-ks8851.txt
net/core/netpoll.c
The net/core/netpoll.c conflict is a bug fix in 'net' happening
to code which is completely removed in 'net-next'.
In micrel-ks8851.txt we simply have overlapping changes.
Signed-off-by: David S. Miller <davem@davemloft.net>
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|
security_xfrm_policy_alloc can be called in atomic context so the
allocation should be done with GFP_ATOMIC. Add an argument to let the
callers choose the appropriate way. In order to do so a gfp argument
needs to be added to the method xfrm_policy_alloc_security in struct
security_operations and to the internal function
selinux_xfrm_alloc_user. After that switch to GFP_ATOMIC in the atomic
callers and leave GFP_KERNEL as before for the rest.
The path that needed the gfp argument addition is:
security_xfrm_policy_alloc -> security_ops.xfrm_policy_alloc_security ->
all users of xfrm_policy_alloc_security (e.g. selinux_xfrm_policy_alloc) ->
selinux_xfrm_alloc_user (here the allocation used to be GFP_KERNEL only)
Now adding a gfp argument to selinux_xfrm_alloc_user requires us to also
add it to security_context_to_sid which is used inside and prior to this
patch did only GFP_KERNEL allocation. So add gfp argument to
security_context_to_sid and adjust all of its callers as well.
CC: Paul Moore <paul@paul-moore.com>
CC: Dave Jones <davej@redhat.com>
CC: Steffen Klassert <steffen.klassert@secunet.com>
CC: Fan Du <fan.du@windriver.com>
CC: David S. Miller <davem@davemloft.net>
CC: LSM list <linux-security-module@vger.kernel.org>
CC: SELinux list <selinux@tycho.nsa.gov>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Paul Moore <paul@paul-moore.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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|
There's a kmalloc with GFP_KERNEL in a helper
(pfkey_sadb2xfrm_user_sec_ctx) used in pfkey_compile_policy which is
called under rcu_read_lock. Adjust pfkey_sadb2xfrm_user_sec_ctx to have
a gfp argument and adjust the users.
CC: Dave Jones <davej@redhat.com>
CC: Steffen Klassert <steffen.klassert@secunet.com>
CC: Fan Du <fan.du@windriver.com>
CC: David S. Miller <davem@davemloft.net>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
|
|
iproute2 already defines a structure with that name, let's use another one to
avoid any conflict.
CC: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
|
|
This patch fixes commit d3623099d350 ("ipsec: add support of limited SA dump").
sadb_ext_min_len array should be updated with the new type (SADB_X_EXT_FILTER).
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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The goal of this patch is to allow userland to dump only a part of SA by
specifying a filter during the dump.
The kernel is in charge to filter SA, this avoids to generate useless netlink
traffic (it save also some cpu cycles). This is particularly useful when there
is a big number of SA set on the system.
Note that I removed the union in struct xfrm_state_walk to fix a problem on arm.
struct netlink_callback->args is defined as a array of 6 long and the first long
is used in xfrm code to flag the cb as initialized. Hence, we must have:
sizeof(struct xfrm_state_walk) <= sizeof(long) * 5.
With the union, it was false on arm (sizeof(struct xfrm_state_walk) was
sizeof(long) * 7), due to the padding.
In fact, whatever the arch is, this union seems useless, there will be always
padding after it. Removing it will not increase the size of this struct (and
reduce it on arm).
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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In the case when KMs have no listeners, km_query() will fail and
temporary SAs are garbage collected immediately after their allocation.
This causes strain on memory allocation, leading even to OOM since
temporary SA alloc/free cycle is performed for every packet
and garbage collection does not keep up the pace.
The sane thing to do is to make sure we have audience before
temporary SA allocation.
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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|
In order to check against valid IPcomp spi range, export verify_userspi_info
for both pfkey and netlink interface.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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|
We now queue packets to the policy if the states are not yet resolved,
this replaces the ancient sleeping code. Also the sleeping can cause
indefinite task hangs if the needed state does not get resolved.
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
|
|
By semantics, xfrm layer is fully name space aware,
so will the locks, e.g. xfrm_state/pocliy_lock.
Ensure exclusive access into state/policy link list
for different name space with one global lock is not
right in terms of semantics aspect at first place,
as they are indeed mutually independent with each
other, but also more seriously causes scalability
problem.
One practical scenario is on a Open Network Stack,
more than hundreds of lxc tenants acts as routers
within one host, a global xfrm_state/policy_lock
becomes the bottleneck. But onces those locks are
decoupled in a per-namespace fashion, locks contend
is just with in specific name space scope, without
causing additional SPD/SAD access delay for other
name space.
Also this patch improve scalability while as without
changing original xfrm behavior.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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|
because the home agent could surely be run on a different
net namespace other than init_net. The original behavior
could lead into inconsistent of key info.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
|
|
This patch now always passes msg->msg_namelen as 0. recvmsg handlers must
set msg_namelen to the proper size <= sizeof(struct sockaddr_storage)
to return msg_name to the user.
This prevents numerous uninitialized memory leaks we had in the
recvmsg handlers and makes it harder for new code to accidentally leak
uninitialized memory.
Optimize for the case recvfrom is called with NULL as address. We don't
need to copy the address at all, so set it to NULL before invoking the
recvmsg handler. We can do so, because all the recvmsg handlers must
cope with the case a plain read() is called on them. read() also sets
msg_name to NULL.
Also document these changes in include/linux/net.h as suggested by David
Miller.
Changes since RFC:
Set msg->msg_name = NULL if user specified a NULL in msg_name but had a
non-null msg_namelen in verify_iovec/verify_compat_iovec. This doesn't
affect sendto as it would bail out earlier while trying to copy-in the
address. It also more naturally reflects the logic by the callers of
verify_iovec.
With this change in place I could remove "
if (!uaddr || msg_sys->msg_namelen == 0)
msg->msg_name = NULL
".
This change does not alter the user visible error logic as we ignore
msg_namelen as long as msg_name is NULL.
Also remove two unnecessary curly brackets in ___sys_recvmsg and change
comments to netdev style.
Cc: David Miller <davem@davemloft.net>
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
|
|
For legacy IPsec anti replay mechanism:
bitmap in struct xfrm_replay_state could only provide a 32 bits
window size limit in current design, thus user level parameter
sadb_sa_replay should honor this limit, otherwise misleading
outputs("replay=244") by setkey -D will be:
192.168.25.2 192.168.22.2
esp mode=transport spi=147561170(0x08cb9ad2) reqid=0(0x00000000)
E: aes-cbc 9a8d7468 7655cf0b 719d27be b0ddaac2
A: hmac-sha1 2d2115c2 ebf7c126 1c54f186 3b139b58 264a7331
seq=0x00000000 replay=244 flags=0x00000000 state=mature
created: Sep 17 14:00:00 2013 current: Sep 17 14:00:22 2013
diff: 22(s) hard: 30(s) soft: 26(s)
last: Sep 17 14:00:00 2013 hard: 0(s) soft: 0(s)
current: 1408(bytes) hard: 0(bytes) soft: 0(bytes)
allocated: 22 hard: 0 soft: 0
sadb_seq=1 pid=4854 refcnt=0
192.168.22.2 192.168.25.2
esp mode=transport spi=255302123(0x0f3799eb) reqid=0(0x00000000)
E: aes-cbc 6485d990 f61a6bd5 e5660252 608ad282
A: hmac-sha1 0cca811a eb4fa893 c47ae56c 98f6e413 87379a88
seq=0x00000000 replay=244 flags=0x00000000 state=mature
created: Sep 17 14:00:00 2013 current: Sep 17 14:00:22 2013
diff: 22(s) hard: 30(s) soft: 26(s)
last: Sep 17 14:00:00 2013 hard: 0(s) soft: 0(s)
current: 1408(bytes) hard: 0(bytes) soft: 0(bytes)
allocated: 22 hard: 0 soft: 0
sadb_seq=0 pid=4854 refcnt=0
And also, optimizing xfrm_replay_check window checking by setting the
desirable x->props.replay_window with only doing the comparison once
for all when xfrm_state is first born.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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present_and_same_family has checked addresses family validness for both
SADB_EXT_ADDRESS_SRC and SADB_EXT_ADDRESS_DST in the beginning.
Thereafter pfkey_sadb_addr2xfrm_addr doesn't need to do the checking again.
Signed-off-by: Fan Du <fan.du@windriver.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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The lookup tables for minimum sizes of extensions and for the pfkey
handler functions are read only, therefore can be const.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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The mark argument is read only, so constify it. Also make dummy_mark in
af_key const -- only used as dummy argument for this very function.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
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This is inspired by a5cc68f3d6 "af_key: fix info leaks in notify
messages". There are some struct members which don't get initialized
and could disclose small amounts of private information.
Acked-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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key_notify_sa_flush() and key_notify_policy_flush() miss to initialize
the sadb_msg_reserved member of the broadcasted message and thereby
leak 2 bytes of heap memory to listeners. Fix that.
Signed-off-by: Mathias Krause <minipli@googlemail.com>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
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