iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
linux/fs/erofs
History
Gao Xiang 40c73b2ea9 erofs: validate the extent length for uncompressed pclusters 
[ Upstream commit c505feba4c0d76084e56ec498ce819f02a7043ae ]

syzkaller reported a KASAN use-after-free:
https://syzkaller.appspot.com/bug?extid=2ae90e873e97f1faf6f2

The referenced fuzzed image actually has two issues:
 - m_pa == 0 as a non-inlined pcluster;
 - The logical length is longer than its physical length.

The first issue has already been addressed.  This patch addresses
the second issue by checking the extent length validity.

Reported-by: syzbot+2ae90e873e97f1faf6f2@syzkaller.appspotmail.com
Fixes: 02827e1796b3 ("staging: erofs: add erofs_map_blocks_iter")
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Gao Xiang <hsiangkao@linux.alibaba.com>
Link: https://lore.kernel.org/r/20221205150050.47784-2-hsiangkao@linux.alibaba.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-31 13:31:59 +01:00
..
compress.h
erofs: introduce multi-reference pclusters (fully-referenced)
2022-07-22 21:44:27 +08:00
data.c
erofs: get rid of erofs_prepare_dio() helper
2022-07-22 21:46:03 +08:00
decompressor_lzma.c
erofs: introduce partial-referenced pclusters
2022-09-26 23:55:43 +08:00
decompressor.c
erofs: support interlaced uncompressed data for compressed files
2022-09-23 10:55:56 +08:00
dir.c
erofs: update ctx->pos for every emitted dirent
2022-07-31 22:26:29 +08:00
erofs_fs.h
erofs: introduce partial-referenced pclusters
2022-09-26 23:55:43 +08:00
fscache.c
erofs: check the uniqueness of fsid in shared domain in advance
2022-12-31 13:31:59 +01:00
inode.c
erofs: clean up erofs_iget()
2022-09-27 17:27:45 +08:00
internal.h
erofs: check the uniqueness of fsid in shared domain in advance
2022-12-31 13:31:59 +01:00
Kconfig
erofs: register fscache volume
2022-05-18 00:11:19 +08:00
Makefile
erofs: register fscache volume
2022-05-18 00:11:19 +08:00
namei.c
erofs: clean up erofs_iget()
2022-09-27 17:27:45 +08:00
pcpubuf.c
erofs: get rid of ->lru usage
2021-10-25 08:22:59 +08:00
super.c
erofs: check the uniqueness of fsid in shared domain in advance
2022-12-31 13:31:59 +01:00
sysfs.c
erofs: fix use-after-free of fsid and domain_id string
2022-11-10 09:53:20 +08:00
tagptr.h
erofs: clean up file headers & footers
2021-06-08 00:41:24 +08:00
utils.c
mm: shrinkers: provide shrinkers with names
2022-07-03 18:08:40 -07:00
xattr.c
erofs: use meta buffers for xattr operations
2022-01-04 23:47:08 +08:00
xattr.h
erofs: clean up unnecessary code and comments
2022-09-27 17:27:25 +08:00
zdata.c
erofs: Fix pcluster memleak when its block address is zero
2022-12-31 13:31:59 +01:00
zdata.h
erofs: shouldn't churn the mapping page for duplicated copies
2022-10-17 06:55:49 +08:00
zmap.c
erofs: validate the extent length for uncompressed pclusters
2022-12-31 13:31:59 +01:00