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-rw-r--r--fs/smbfs/dir.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/fs/smbfs/dir.c b/fs/smbfs/dir.c
index 34c7a11d91f0..70d9c5a37f5a 100644
--- a/fs/smbfs/dir.c
+++ b/fs/smbfs/dir.c
@@ -434,6 +434,11 @@ smb_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd)
if (dentry->d_name.len > SMB_MAXNAMELEN)
goto out;
+ /* Do not allow lookup of names with backslashes in */
+ error = -EINVAL;
+ if (memchr(dentry->d_name.name, '\\', dentry->d_name.len))
+ goto out;
+
lock_kernel();
error = smb_proc_getattr(dentry, &finfo);
#ifdef SMBFS_PARANOIA