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Jan Kara fde2497d2b fat: fix uninitialized field in nostale filehandles 
When fat_encode_fh_nostale() encodes file handle without a parent it
stores only first 10 bytes of the file handle. However the length of the
file handle must be a multiple of 4 so the file handle is actually 12
bytes long and the last two bytes remain uninitialized. This is not
great at we potentially leak uninitialized information with the handle
to userspace. Properly initialize the full handle length.

Link: https://lkml.kernel.org/r/20240205122626.13701-1-jack@suse.cz
Reported-by: syzbot+3ce5dea5b1539ff36769@syzkaller.appspotmail.com
Fixes: ea3983ace6b7 ("fat: restructure export_operations")
Signed-off-by: Jan Kara <jack@suse.cz>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Cc: Amir Goldstein <amir73il@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2024-02-22 15:38:55 -08:00
..
9p
9p: Use length of data written to the server in preference to error
2024-01-04 13:15:31 +00:00
adfs
adfs: remove writepage implementation
2023-12-29 11:58:33 -08:00
affs
affs: d_obtain_alias(ERR_PTR(...)) will do the right thing
2023-12-21 12:51:02 -05:00
afs
afs: Fix missing/incorrect unlocking of RCU read lock
2024-01-22 22:30:38 +00:00
autofs
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
bcachefs
bcachefs: Fix missing va_end()
2024-02-13 21:59:27 -05:00
befs
befs: d_obtain_alias(ERR_PTR(...)) will do the right thing
2023-12-21 12:51:02 -05:00
bfs
misc cleanups (the part that hadn't been picked by individual fs trees)
2024-01-11 20:23:50 -08:00
btrfs
for-6.8-rc4-tag
2024-02-14 15:47:02 -08:00
cachefiles
cachefiles, erofs: Fix NULL deref in when cachefiles is not doing ondemand-mode
2024-01-22 22:25:15 +00:00
ceph
ceph: add ceph_cap_unlink_work to fire check_caps() immediately
2024-02-13 11:22:54 +01:00
coda
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
configfs
…
cramfs
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
crypto
fscrypt: document that CephFS supports fscrypt now
2023-12-26 22:55:42 -06:00
debugfs
Merge branches 'acpi-pm', 'acpi-video', 'acpi-apei' and 'acpi-extlog'
2024-01-04 13:19:40 +01:00
devpts
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
dlm
dlm: update format header reflect current format
2023-12-20 15:36:48 -06:00
ecryptfs
fix directory locking scheme on rename
2024-01-11 20:00:22 -08:00
efivarfs
efivarfs: automatically update super block flag
2023-12-11 11:19:18 +01:00
efs
vfs-6.7.fsid
2023-11-07 12:11:26 -08:00
erofs
erofs: relaxed temporary buffers allocation on readahead
2024-01-27 12:28:08 +08:00
exfat
exfat: fix zero the unwritten part for dio read
2024-01-18 23:01:51 +09:00
exportfs
fs: fix build error with CONFIG_EXPORTFS=m or not defined
2023-10-28 16:16:19 +02:00
ext2
fix directory locking scheme on rename
2024-01-11 20:00:22 -08:00
ext4
Miscellaneous bug fixes and cleanups in ext4's multi-block allocator
2024-02-04 07:33:01 +00:00
f2fs
f2fs: fix double free of f2fs_sb_info
2024-01-12 18:55:09 -08:00
fat
fat: fix uninitialized field in nostale filehandles
2024-02-22 15:38:55 -08:00
freevxfs
freevxfs: lookup: fix function params kernel-doc
2023-12-20 15:02:58 -08:00
fuse
vfs-6.8.rw
2024-01-08 11:11:51 -08:00
gfs2
Revert "gfs2: Use GL_NOBLOCK flag for non-blocking lookups"
2024-02-02 17:21:44 +01:00
hfs
hfs: really remove hfs_writepage
2023-12-29 11:58:34 -08:00
hfsplus
Many singleton patches against the MM code. The patch series which
2024-01-09 11:18:47 -08:00
hostfs
hostfs: use d_splice_alias() calling conventions to simplify failure exits
2023-12-21 12:51:00 -05:00
hpfs
…
hugetlbfs
fs,hugetlb: fix NULL pointer dereference in hugetlbs_fill_super
2024-02-07 21:20:36 -08:00
iomap
mm: add folio_fill_tail() and use it in iomap
2023-12-10 16:51:36 -08:00
isofs
…
jbd2
jbd2: abort journal when detecting metadata writeback error of fs dev
2024-01-04 23:42:21 -05:00
jffs2
jffs2: mark __jffs2_dbg_superblock_counts() static
2023-12-10 17:21:43 -08:00
jfs
Revert "jfs: fix shift-out-of-bounds in dbJoin"
2024-01-29 08:45:10 -06:00
kernfs
Revert "kernfs: convert kernfs_idr_lock to an irq safe raw spinlock"
2024-01-11 11:51:27 +01:00
lockd
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
minix
minixfs kmap_local_page() switchover and related fixes - very similar to sysv series.
2024-01-11 19:54:18 -08:00
netfs
netfs: Fix a NULL vs IS_ERR() check in netfs_perform_write()
2024-01-22 21:58:35 +00:00
nfs
vfs-6.8.netfs
2024-01-19 09:10:23 -08:00
nfs_common
…
nfsd
nfsd-6.8 fixes:
2024-02-07 17:48:15 +00:00
nilfs2
nilfs2: convert cpfile to use kmap_local
2024-02-22 15:38:54 -08:00
nls
…
notify
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
ntfs
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
ntfs3
fs/ntfs3: Slightly simplify ntfs_inode_printk()
2024-01-29 12:05:09 +03:00
ocfs2
ocfs2: spelling fix
2024-02-22 15:38:51 -08:00
omfs
…
openpromfs
…
orangefs
orangefs: saner arguments passing in readdir guts
2023-12-21 12:53:36 -05:00
overlayfs
vfs-6.8-rc5.fixes
2024-02-12 07:15:45 -08:00
proc
fs/proc: do_task_stat: use sig->stats_lock to gather the threads/children stats
2024-02-07 21:20:33 -08:00
pstore
pstore: inode: Use cleanup.h for struct pstore_private
2023-12-08 14:15:44 -08:00
qnx4
qnx4: Use get_directory_fname() in qnx4_match()
2023-12-13 11:19:18 -08:00
qnx6
…
quota
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
ramfs
mm, treewide: rename MAX_ORDER to MAX_PAGE_ORDER
2024-01-08 15:27:15 -08:00
reiserfs
misc cleanups (the part that hadn't been picked by individual fs trees)
2024-01-11 20:23:50 -08:00
romfs
vfs-6.7.ctime
2023-10-30 09:47:13 -10:00
smb
smb: Fix regression in writes when non-standard maximum write size negotiated
2024-02-15 22:19:23 -06:00
squashfs
Squashfs: fix variable overflow triggered by sysbot
2023-12-10 17:21:26 -08:00
sysfs
fs/sysfs/dir.c : Fix typo in comment
2023-12-07 11:35:23 +09:00
sysv
sysv: remove writepage implementation
2023-12-29 11:58:35 -08:00
tracefs
eventfs: Keep all directory links at 1
2024-02-01 11:53:53 -05:00
ubifs
ubifs: fix kernel-doc warnings
2024-01-06 23:49:50 +01:00
udf
misc cleanups (the part that hadn't been picked by individual fs trees)
2024-01-11 20:23:50 -08:00
ufs
Many singleton patches against the MM code. The patch series which
2024-01-09 11:18:47 -08:00
unicode
…
vboxsf
fs: vboxsf: fix a kernel-doc warning
2023-12-08 15:32:31 -07:00
verity
Networking changes for 6.8.
2024-01-11 10:07:29 -08:00
xfs
xfs: remove conditional building of rt geometry validator functions
2024-01-30 14:04:43 +05:30
zonefs
zonefs: Improve error handling
2024-02-16 10:20:35 +09:00
aio.c
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
anon_inodes.c
Merge branch 'kvm-guestmemfd' into HEAD
2023-11-14 08:31:31 -05:00
attr.c
fs: fix doc comment typo fs tree wide
2023-12-21 13:17:54 +01:00
backing-file.c
fs: factor out backing_file_mmap() helper
2023-12-23 16:35:09 +02:00
bad_inode.c
…
binfmt_elf_fdpic.c
execve updates for v6.7-rc1
2023-10-30 19:28:19 -10:00
binfmt_elf_test.c
…
binfmt_elf.c
…
binfmt_flat.c
…
binfmt_misc.c
execve updates for v6.7-rc1
2023-10-30 19:28:19 -10:00
binfmt_script.c
…
buffer.c
Many singleton patches against the MM code. The patch series which
2024-01-09 11:18:47 -08:00
char_dev.c
As usual, lots of singleton and doubleton patches all over the tree and
2023-11-02 20:53:31 -10:00
compat_binfmt_elf.c
…
coredump.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
d_path.c
…
dax.c
fs : Fix warning using plain integer as NULL
2023-11-18 15:00:01 +01:00
dcache.c
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
direct-io.c
fs : Fix warning using plain integer as NULL
2023-11-18 15:00:01 +01:00
drop_caches.c
…
eventfd.c
eventfd: Remove usage of the deprecated ida_simple_xx() API
2023-12-12 14:24:55 +01:00
eventpoll.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
exec.c
execve fixes for v6.8-rc2
2024-01-24 13:32:29 -08:00
fcntl.c
…
fhandle.c
exportfs: add helpers to check if filesystem can encode/decode file handles
2023-10-24 17:57:45 +02:00
file_table.c
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
file.c
file: remove __receive_fd()
2023-12-12 14:24:14 +01:00
filesystems.c
…
fs_context.c
…
fs_parser.c
…
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
netfs: Move pinning-for-writeback from fscache to netfs
2023-12-24 15:08:49 +00:00
fsopen.c
…
init.c
…
inode.c
fix directory locking scheme on rename
2024-01-11 20:00:22 -08:00
internal.h
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
ioctl.c
lsm: new security_file_ioctl_compat() hook
2023-12-24 15:48:03 -05:00
Kconfig
vfs-6.8.netfs
2024-01-19 09:10:23 -08:00
Kconfig.binfmt
…
kernel_read_file.c
…
libfs.c
dcache stuff for this cycle
2024-01-11 20:11:35 -08:00
locks.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
Makefile
vfs-6.8.netfs
2024-01-19 09:10:23 -08:00
mbcache.c
…
mnt_idmapping.c
mnt_idmapping: decouple from namespaces
2023-11-28 14:08:47 +01:00
mount.h
mounts: keep list of mounts in an rbtree
2023-11-18 14:56:16 +01:00
mpage.c
fs: convert block_write_full_page to block_write_full_folio
2023-12-29 11:58:35 -08:00
namei.c
fix buggered locking in bch2_ioctl_subvolume_destroy()
2024-01-12 18:04:01 -08:00
namespace.c
fs: relax mount_setattr() permission checks
2024-02-07 21:16:29 +01:00
nsfs.c
nsfs: use d_make_root()
2023-11-25 02:49:43 -05:00
open.c
vfs-6.8.rw
2024-01-08 11:11:51 -08:00
pipe.c
sysctl-6.8-rc1
2024-01-10 17:44:36 -08:00
pnode.c
mounts: keep list of mounts in an rbtree
2023-11-18 14:56:16 +01:00
pnode.h
…
posix_acl.c
fs: fix doc comment typo fs tree wide
2023-12-21 13:17:54 +01:00
proc_namespace.c
namespace: extract show_path() helper
2023-11-18 14:56:16 +01:00
read_write.c
fsnotify: optionally pass access range in file permission hooks
2023-12-12 16:20:02 +01:00
readdir.c
fsnotify: optionally pass access range in file permission hooks
2023-12-12 16:20:02 +01:00
remap_range.c
remap_range: merge do_clone_file_range() into vfs_clone_file_range()
2024-02-06 17:07:21 +01:00
select.c
…
seq_file.c
…
signalfd.c
…
splice.c
fs: use splice_copy_file_range() inline helper
2023-12-12 16:20:02 +01:00
stack.c
…
stat.c
vfs-6.8.mount
2024-01-08 10:57:34 -08:00
statfs.c
…
super.c
fscrypt updates for 6.8
2024-01-10 10:24:49 -08:00
sync.c
…
sysctls.c
fs: Remove the now superfluous sentinel elements from ctl_table array
2023-12-28 04:57:57 -08:00
timerfd.c
…
userfaultfd.c
Generic:
2024-01-17 13:03:37 -08:00
utimes.c
…
xattr.c
…