Messages in this thread Patch in this message |  | | | Date | Fri, 18 Nov 2011 16:02:49 -0800 | | From | Greg KH <> | | Subject | [13/26] hfs: add sanity check for file name length |
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3.1-stable review patch. If anyone has any objections, please let me know.
------------------ From: Dan Carpenter <dan.carpenter@oracle.com>
commit bc5b8a9003132ae44559edd63a1623b7b99dfb68 upstream.
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> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- fs/hfs/trans.c | 2 ++ 1 file changed, 2 insertions(+) --- a/fs/hfs/trans.c +++ b/fs/hfs/trans.c @@ -40,6 +40,8 @@ int hfs_mac2asc(struct super_block *sb, src = in->name; srclen = in->len; + if (srclen > HFS_NAMELEN) + srclen = HFS_NAMELEN; dst = out; dstlen = HFS_MAX_NAMELEN; if (nls_io) {
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