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Jakob Koschel 45b2b7d710 f2fs: fix dereference of stale list iterator after loop body 
[ Upstream commit 2aaf51dd39 ]

The list iterator variable will be a bogus pointer if no break was hit.
Dereferencing it (cur->page in this case) could load an out-of-bounds/undefined
value making it unsafe to use that in the comparision to determine if the
specific element was found.

Since 'cur->page' *can* be out-ouf-bounds it cannot be guaranteed that
by chance (or intention of an attacker) it matches the value of 'page'
even though the correct element was not found.

This is fixed by using a separate list iterator variable for the loop
and only setting the original variable if a suitable element was found.
Then determing if the element was found is simply checking if the
variable is set.

Fixes: 8c242db9b8 ("f2fs: fix stale ATOMIC_WRITTEN_PAGE private pointer")
Signed-off-by: Jakob Koschel <jakobkoschel@gmail.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-06-09 10:23:13 +02:00
..
9p Revert "fs/9p: search open fids first" 2022-02-08 18:34:04 +01:00
adfs
affs
afs afs: Adjust ACK interpretation to try and cope with NAT 2022-06-09 10:22:40 +02:00
autofs autofs: fix wait name hash calculation in autofs_wait() 2021-10-20 21:09:02 -04:00
befs isystem: ship and use stdarg.h 2021-08-19 09:02:55 +09:00
bfs
btrfs btrfs: fix the error handling for submit_extent_page() for btrfs_do_readpage() 2022-06-09 10:22:30 +02:00
cachefiles cachefiles: Change %p in format strings to something else 2021-08-27 13:34:02 +01:00
ceph ceph: fix setting of xattrs on async created inodes 2022-05-18 10:26:55 +02:00
cifs smb3: check for null tcon 2022-06-09 10:22:43 +02:00
coda
configfs configfs: fix a race in configfs_{,un}register_subsystem() 2022-03-02 11:48:02 +01:00
cramfs
crypto fscrypt: allow 256-bit master keys with AES-256-XTS 2021-11-18 19:16:11 +01:00
debugfs debugfs: lockdown: Allow reading debugfs files that are not world readable 2022-01-27 11:03:55 +01:00
devpts fsnotify: fix fsnotify hooks in pseudo filesystems 2022-02-01 17:27:01 +01:00
dlm fs: dlm: filter user dlm messages for kernel locks 2022-01-27 11:04:23 +01:00
ecryptfs
efivarfs
efs
erofs iomap: Add done_before argument to iomap_dio_rw 2022-05-01 17:22:32 +02:00
exfat exfat: check if cluster num is valid 2022-06-06 08:43:37 +02:00
exportfs
ext2 ext2: correct max file size computing 2022-04-08 14:23:35 +02:00
ext4 ext4: reject the 'commit' option on ext2 filesystems 2022-06-09 10:23:00 +02:00
f2fs f2fs: fix dereference of stale list iterator after loop body 2022-06-09 10:23:13 +02:00
fat fat: add ratelimit to fat*_ent_bread() 2022-06-09 10:22:42 +02:00
freevxfs
fscache fscache: Remove an unused static variable 2021-10-04 22:13:12 +01:00
fuse iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable 2022-05-01 17:22:28 +02:00
gfs2 gfs2: use i_lock spin_lock for inode qadata 2022-06-09 10:22:40 +02:00
hfs
hfsplus
hostfs hostfs: support splice_write 2021-08-26 22:28:02 +02:00
hpfs hpfs: use iomap_fiemap to implement ->fiemap 2021-07-27 11:00:36 +02:00
hugetlbfs hugetlbfs: fix hugetlbfs_statfs() locking 2022-06-09 10:23:11 +02:00
iomap iomap: iomap_write_failed fix 2022-06-09 10:22:55 +02:00
isofs isofs: Fix out of bound access for corrupted isofs image 2021-11-12 15:05:50 +01:00
jbd2 jbd2: fix a potential race while discarding reserved buffers after an abort 2022-04-27 14:39:02 +02:00
jffs2 jffs2: fix memory leak in jffs2_scan_medium 2022-04-08 14:22:53 +02:00
jfs fs: jfs: fix possible NULL pointer dereference in dbFree() 2022-06-09 10:22:41 +02:00
kernfs kernfs: don't create a negative dentry if inactive node exists 2021-10-04 10:27:18 +02:00
ksmbd ksmbd: set fixed sector size to FS_SECTOR_SIZE_INFORMATION 2022-05-09 09:14:40 +02:00
lockd lockd: fix failure to cleanup client locks 2022-02-05 12:38:57 +01:00
minix minix: fix bug when opening a file with O_DIRECT 2022-04-13 20:59:10 +02:00
netfs netfs: fix parameter of cleanup() 2021-12-29 12:28:59 +01:00
nfs NFS: Memory allocation failures are not server fatal errors 2022-06-06 08:43:42 +02:00
nfs_common nfs: Fix kerneldoc warning shown up by W=1 2021-10-04 22:02:17 +01:00
nfsd nfsd: destroy percpu stats counters after reply cache shutdown 2022-06-09 10:23:12 +02:00
nilfs2 nilfs2: fix lockdep warnings during disk space reclamation 2022-05-25 09:57:26 +02:00
nls
notify fsnotify: fix wrong lockdep annotations 2022-06-09 10:22:50 +02:00
ntfs iov_iter: Turn iov_iter_fault_in_readable into fault_in_iov_iter_readable 2022-05-01 17:22:28 +02:00
ntfs3 fs/ntfs3: Restore ntfs_xattr_get_acl and ntfs_xattr_set_acl functions 2022-06-09 10:22:28 +02:00
ocfs2 ocfs2: fix crash when mount with quota enabled 2022-04-08 14:22:56 +02:00
omfs
openpromfs
orangefs orangefs: Fix the size of a memory allocation in orangefs_bufmap_alloc() 2022-01-20 09:13:13 +01:00
overlayfs ovl: fix NULL pointer dereference in copy up warning 2022-02-05 12:38:59 +01:00
proc proc: fix dentry/inode overinstantiating under /proc/${pid}/net 2022-06-09 10:23:10 +02:00
pstore pstore: Don't use semaphores in always-atomic-context code 2022-04-08 14:23:01 +02:00
qnx4 qnx4: work around gcc false positive warning bug 2021-09-21 08:36:48 -07:00
qnx6
quota quota: make dquot_quota_sync return errors from ->sync_fs 2022-02-23 12:03:06 +01:00
ramfs
reiserfs Kbuild updates for v5.15 2021-09-03 15:33:47 -07:00
romfs
smbfs_common cifs: Fix crash on unload of cifs_arc4.ko 2021-12-14 10:57:12 +01:00
squashfs squashfs: use bvec_virt 2021-08-16 10:50:32 -06:00
sysfs sysfs: Allow deferred execution of iomem_get_mapping() 2021-08-06 13:05:28 +02:00
sysv
tracefs tracefs: Set the group ownership in apply_options() not parse_options() 2022-03-02 11:48:05 +01:00
ubifs ubifs: rename_whiteout: correct old_dir size computing 2022-04-08 14:24:08 +02:00
udf udf: Avoid using stale lengthOfImpUse 2022-05-15 20:18:52 +02:00
ufs isystem: ship and use stdarg.h 2021-08-19 09:02:55 +09:00
unicode
vboxsf vboxfs: fix broken legacy mount signature checking 2021-09-27 11:26:21 -07:00
verity fs-verity: fix signed integer overflow with i_size near S64_MAX 2021-09-22 10:56:34 -07:00
xfs iomap: Add done_before argument to iomap_dio_rw 2022-05-01 17:22:32 +02:00
zonefs zonefs: Clear inode information flags on inode creation 2022-05-09 09:14:41 +02:00
aio.c aio: Fix incorrect usage of eventfd_signal_allowed() 2021-12-14 10:57:22 +01:00
anon_inodes.c
attr.c fs: handle circular mappings correctly 2021-11-25 09:48:46 +01:00
bad_inode.c vfs: add rcu argument to ->get_acl() callback 2021-08-18 22:08:24 +02:00
binfmt_aout.c binfmt: a.out: Fix bogus semicolon 2021-09-05 10:15:05 -07:00
binfmt_elf.c coredump: Use the vma snapshot in fill_files_note 2022-04-08 14:24:18 +02:00
binfmt_elf_fdpic.c coredump: Snapshot the vmas in do_coredump 2022-04-08 14:24:17 +02:00
binfmt_flat.c binfmt_flat: do not stop relocating GOT entries prematurely on riscv 2022-06-09 10:22:26 +02:00
binfmt_misc.c
binfmt_script.c
buffer.c mm: fs: fix lru_cache_disabled race in bh_lru 2022-04-08 14:22:54 +02:00
char_dev.c
compat_binfmt_elf.c
coredump.c coredump: Use the vma snapshot in fill_files_note 2022-04-08 14:24:18 +02:00
d_path.c d_path: make 'prepend()' fill up the buffer exactly on overflow 2021-09-02 10:07:29 -07:00
dax.c dax: fix cache flush on PMD-mapped pages 2022-06-09 10:23:09 +02:00
dcache.c
direct-io.c
drop_caches.c fs: drop_caches: fix skipping over shadow cache inodes 2021-09-03 09:58:10 -07:00
eventfd.c eventfd: Export eventfd_wake_count to modules 2021-09-06 07:20:56 -04:00
eventpoll.c ARM development updates for 5.15: 2021-09-09 13:25:49 -07:00
exec.c exec: Force single empty string when argv is empty 2022-04-08 14:23:01 +02:00
fcntl.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
fhandle.c
file.c fs: fix fd table size alignment properly 2022-04-08 14:23:54 +02:00
file_table.c SUNRPC: Ensure we flush any closed sockets before xs_xprt_free() 2022-05-18 10:26:57 +02:00
filesystems.c fs: simplify get_filesystem_list / get_all_fs_names 2021-08-23 01:25:40 -04:00
fs-writeback.c writeback: Avoid skipping inode writeback 2022-05-18 10:26:56 +02:00
fs_context.c vfs: fs_context: fix up param length parsing in legacy_parse_param 2022-01-20 09:13:14 +01:00
fs_parser.c namei: Standardize callers of filename_lookup() 2021-09-07 16:07:47 -04:00
fs_pin.c
fs_struct.c
fs_types.c
fsopen.c
init.c
inode.c fs: export an inode_update_time helper 2021-11-25 09:49:08 +01:00
internal.h block: simplify the block device syncing code 2022-04-27 14:38:50 +02:00
io-wq.c io-wq: drop wqe lock before creating new worker 2021-12-22 09:32:51 +01:00
io-wq.h io-wq: provide a way to limit max number of workers 2021-08-29 07:55:55 -06:00
io_uring.c io_uring: arm poll for non-nowait files 2022-05-25 09:57:21 +02:00
ioctl.c fs: fix an infinite loop in iomap_fiemap 2022-05-25 09:57:26 +02:00
Kconfig 4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate 2021-09-12 10:10:21 -07:00
Kconfig.binfmt binfmt: remove support for em86 (alpha only) 2021-07-25 22:33:03 -07:00
kernel_read_file.c vfs: check fd has read access in kernel_read_file_from_fd() 2021-10-18 20:22:03 -10:00
libfs.c
locks.c Revert "memcg: enable accounting for file lock caches" 2021-09-07 11:21:48 -07:00
Makefile 4 cifs/smb3 fixes, one for DFS reconnect, and one to begin creating common headers for server and client and the other two to rename the cifs_common directory to smbfs_common to be more consistent ie change use of the name cifs to smb which is more accurate 2021-09-12 10:10:21 -07:00
mbcache.c
mount.h
mpage.c
namei.c VFS: filename_create(): fix incorrect intent. 2022-04-27 14:38:57 +02:00
namespace.c fs/mount_setattr: always cleanup mount_kattr 2022-01-05 12:42:39 +01:00
no-block.c
nsfs.c
open.c mm, thp: fix incorrect unmap behavior for private pages 2021-11-18 19:17:17 +01:00
pipe.c pipe: Fix missing lock in pipe_resize_ring() 2022-06-06 08:43:37 +02:00
pnode.c
pnode.h
posix_acl.c ovl: enable RCU'd ->get_acl() 2021-08-18 22:08:24 +02:00
proc_namespace.c
read_write.c fs: clean up after mandatory file locking support removal 2021-08-24 07:52:45 -04:00
readdir.c
remap_range.c fs: remove mandatory file locking support 2021-08-23 06:15:36 -04:00
select.c select: Fix indefinitely sleeping task in poll_schedule_timeout() 2022-01-29 10:58:25 +01:00
seq_file.c seq_file: disallow extremely large seq buffer allocations 2021-07-19 17:18:48 -07:00
signalfd.c signalfd: use wake_up_pollfree() 2021-12-14 10:57:15 +01:00
splice.c
stack.c
stat.c stat: fix inconsistency between struct stat and struct compat_stat 2022-04-27 14:38:57 +02:00
statfs.c
super.c vfs: make freeze_super abort when sync_filesystem returns error 2022-02-23 12:03:05 +01:00
sync.c vfs: make sync_filesystem return errors from ->sync_fs 2022-04-27 14:38:50 +02:00
timerfd.c timerfd: Provide timerfd_resume() 2021-08-10 17:57:22 +02:00
userfaultfd.c userfaultfd: fix a race between writeprotect and exit_mmap() 2021-10-18 20:22:02 -10:00
utimes.c
xattr.c