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(parent: df85207) | patch
f2fs: sanity check of xattr entry size
authorJaegeuk Kim <jaegeuk@kernel.org>
Thu, 27 Dec 2018 03:54:07 +0000 (19:54 -0800)
committerJaegeuk Kim <jaegeuk@kernel.org>
Wed, 2 Jan 2019 23:44:52 +0000 (15:44 -0800)
commitb8f3009cdb2b3e6d1476d5cf5acf986ce5948597
treee0dd8d69a602ce774cf616bfaf70f5eb72055f2btree | snapshot (tar.gz zip)
parentdf852073915432d09ada8683e5e007c06ffaf113commit | diff
f2fs: sanity check of xattr entry size

There is a security report where f2fs_getxattr() has a hole to expose wrong
memory region when the image is malformed like this.

f2fs_getxattr: entry->e_name_len: 4, size: 12288, buffer_size: 16384, len: 4

Cc: <stable@vger.kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
fs/f2fs/xattr.c diff | blob | blame | history