Gao Xiang 40c73b2ea9 erofs: validate the extent length for uncompressed pclusters ... [ Upstream commit c505feba4c ] 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: 02827e1796 ("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
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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