summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorDan Carpenter <dan.carpenter@oracle.com>2011-11-14 17:52:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-15 14:29:42 -0200
commitbc5b8a9003132ae44559edd63a1623b7b99dfb68 (patch)
treee5dd06f9262c13daaa3d09f643572f909ba2cdbd
parent7f80850d3f9fd8fda23a317044aef3a6bafab06b (diff)
downloadconfigs-bc5b8a9003132ae44559edd63a1623b7b99dfb68.tar.gz
hfs: add sanity check for file name length
On a corrupted file system the ->len field could be wrong leading to a buffer overflow. Reported-and-acked-by: Clement LECIGNE <clement.lecigne@netasq.com> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--fs/hfs/trans.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/hfs/trans.c b/fs/hfs/trans.c
index e673a88b8ae..b1ce4c7ad3f 100644
--- a/fs/hfs/trans.c
+++ b/fs/hfs/trans.c
@@ -40,6 +40,8 @@ int hfs_mac2asc(struct super_block *sb, char *out, const struct hfs_name *in)
src = in->name;
srclen = in->len;
+ if (srclen > HFS_NAMELEN)
+ srclen = HFS_NAMELEN;
dst = out;
dstlen = HFS_MAX_NAMELEN;
if (nls_io) {