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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2011-11-14 17:52:08 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-11-15 14:29:42 -0200 |
| commit | bc5b8a9003132ae44559edd63a1623b7b99dfb68 (patch) | |
| tree | e5dd06f9262c13daaa3d09f643572f909ba2cdbd /fs/hfs | |
| parent | 7f80850d3f9fd8fda23a317044aef3a6bafab06b (diff) | |
| download | linux-exynos-bc5b8a9003132ae44559edd63a1623b7b99dfb68.tar.gz linux-exynos-bc5b8a9003132ae44559edd63a1623b7b99dfb68.tar.bz2 linux-exynos-bc5b8a9003132ae44559edd63a1623b7b99dfb68.zip | |
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>
Diffstat (limited to 'fs/hfs')
| -rw-r--r-- | fs/hfs/trans.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/hfs/trans.c b/fs/hfs/trans.c index e673a88b8ae7..b1ce4c7ad3fb 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) { |