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Paulo Alcantara dbc8edb80f smb: client: fix OOB in smb2_query_reparse_point() 
[ Upstream commit 3a42709fa909e22b0be4bb1e2795aa04ada732a3 ]

Validate @ioctl_rsp->OutputOffset and @ioctl_rsp->OutputCount so that
their sum does not wrap to a number that is smaller than @reparse_buf
and we end up with a wild pointer as follows:

  BUG: unable to handle page fault for address: ffff88809c5cd45f
  #PF: supervisor read access in kernel mode
  #PF: error_code(0x0000) - not-present page
  PGD 4a01067 P4D 4a01067 PUD 0
  Oops: 0000 [#1] PREEMPT SMP NOPTI
  CPU: 2 PID: 1260 Comm: mount.cifs Not tainted 6.7.0-rc4 #2
  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS
  rel-1.16.2-3-gd478f380-rebuilt.opensuse.org 04/01/2014
  RIP: 0010:smb2_query_reparse_point+0x3e0/0x4c0 [cifs]
  Code: ff ff e8 f3 51 fe ff 41 89 c6 58 5a 45 85 f6 0f 85 14 fe ff ff
  49 8b 57 48 8b 42 60 44 8b 42 64 42 8d 0c 00 49 39 4f 50 72 40 <8b>
  04 02 48 8b 9d f0 fe ff ff 49 8b 57 50 89 03 48 8b 9d e8 fe ff
  RSP: 0018:ffffc90000347a90 EFLAGS: 00010212
  RAX: 000000008000001f RBX: ffff88800ae11000 RCX: 00000000000000ec
  RDX: ffff88801c5cd440 RSI: 0000000000000000 RDI: ffffffff82004aa4
  RBP: ffffc90000347bb0 R08: 00000000800000cd R09: 0000000000000001
  R10: 0000000000000000 R11: 0000000000000024 R12: ffff8880114d4100
  R13: ffff8880114d4198 R14: 0000000000000000 R15: ffff8880114d4000
  FS: 00007f02c07babc0(0000) GS:ffff88806ba00000(0000)
  knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: ffff88809c5cd45f CR3: 0000000011750000 CR4: 0000000000750ef0
  PKRU: 55555554
  Call Trace:
   <TASK>
   ? __die+0x23/0x70
   ? page_fault_oops+0x181/0x480
   ? search_module_extables+0x19/0x60
   ? srso_alias_return_thunk+0x5/0xfbef5
   ? exc_page_fault+0x1b6/0x1c0
   ? asm_exc_page_fault+0x26/0x30
   ? _raw_spin_unlock_irqrestore+0x44/0x60
   ? smb2_query_reparse_point+0x3e0/0x4c0 [cifs]
   cifs_get_fattr+0x16e/0xa50 [cifs]
   ? srso_alias_return_thunk+0x5/0xfbef5
   ? lock_acquire+0xbf/0x2b0
   cifs_root_iget+0x163/0x5f0 [cifs]
   cifs_smb3_do_mount+0x5bd/0x780 [cifs]
   smb3_get_tree+0xd9/0x290 [cifs]
   vfs_get_tree+0x2c/0x100
   ? capable+0x37/0x70
   path_mount+0x2d7/0xb80
   ? srso_alias_return_thunk+0x5/0xfbef5
   ? _raw_spin_unlock_irqrestore+0x44/0x60
   __x64_sys_mount+0x11a/0x150
   do_syscall_64+0x47/0xf0
   entry_SYSCALL_64_after_hwframe+0x6f/0x77
  RIP: 0033:0x7f02c08d5b1e

Fixes: 2e4564b31b64 ("smb3: add support for stat of WSL reparse points for special file types")
Cc: stable@vger.kernel.org
Reported-by: Robert Morris <rtm@csail.mit.edu>
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-01-05 15:12:23 +01:00
..
9p
9p: missing chunk of "fs/9p: Don't update file type when updating file attributes"
2022-06-22 14:13:12 +02:00
adfs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-10-24 12:26:05 -07:00
affs
affs: initialize fsdata in affs_truncate()
2023-02-01 08:23:11 +01:00
afs
afs: Fix refcount underflow from error handling race
2023-12-20 15:44:27 +01:00
autofs
autofs: fix memory leak of waitqueues in autofs_catatonic_mode
2023-09-23 11:01:04 +02:00
befs
…
bfs
bfs: don't use WARNING: string when it's just info.
2021-01-06 14:56:52 +01:00
btrfs
Revert "btrfs: add dmesg output for first mount and last unmount of a filesystem"
2023-12-13 18:27:07 +01:00
cachefiles
fs/cachefiles: Remove wait_bit_key layout dependency
2021-03-30 14:32:07 +02:00
ceph
ceph: fix type promotion bug on 32bit systems
2023-10-25 11:54:15 +02:00
cifs
smb: client: fix OOB in smb2_query_reparse_point()
2024-01-05 15:12:23 +01:00
coda
coda: Avoid partial allocation of sig_inputArgs
2023-03-11 16:39:51 +01:00
configfs
Revert "configfs: fix a race in configfs_lookup()"
2023-09-21 09:45:15 +02:00
cramfs
…
crypto
fscrypt: fix keyring memory leak on mount failure
2022-11-10 18:14:25 +01:00
debugfs
debugfs: fix error when writing negative value to atomic_t debugfs file
2023-01-14 10:15:19 +01:00
devpts
fsnotify: fix fsnotify hooks in pseudo filesystems
2022-02-01 17:25:39 +01:00
dlm
dlm: fix plock lookup when using multiple lockspaces
2023-09-19 12:20:22 +02:00
ecryptfs
Revert "ecryptfs: replace BUG_ON with error handling code"
2021-05-26 12:06:55 +02:00
efivarfs
efivarfs: revert "fix memory leak in efivarfs_create()"
2020-11-25 16:55:02 +01:00
efs
…
erofs
erofs: ensure that the post-EOF tails are all zeroed
2023-09-19 12:20:02 +02:00
exfat
exfat: support handle zero-size directory
2023-11-28 16:54:52 +00:00
exportfs
…
ext2
ext2: fix datatype of block number in ext2_xattr_set2()
2023-09-23 11:01:07 +02:00
ext4
ext4: prevent the normalized size from exceeding EXT_MAX_BLOCKS
2023-12-20 15:44:37 +01:00
f2fs
f2fs: avoid format-overflow warning
2023-11-28 16:55:00 +00:00
fat
fat: add ratelimit to fat*_ent_bread()
2022-06-09 10:20:58 +02:00
freevxfs
…
fscache
fscache: Fix cookie key hashing
2021-09-18 13:40:15 +02:00
fuse
fuse: dax: set fc->dax to NULL in fuse_dax_conn_free()
2023-12-20 15:44:30 +01:00
gfs2
gfs2: Silence "suspicious RCU usage in gfs2_permission" warning
2023-11-28 16:54:53 +00:00
hfs
hfs: fix missing hfs_bnode_get() in __hfs_bnode_create
2023-03-11 16:39:55 +01:00
hfsplus
fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode()
2023-05-30 12:57:47 +01:00
hostfs
hostfs: fix memory handling in follow_link()
2021-04-14 08:42:06 +02:00
hpfs
…
hugetlbfs
hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param()
2023-01-14 10:16:20 +01:00
iomap
xfs: use current->journal_info for detecting transaction recursion
2022-07-07 17:52:19 +02:00
isofs
isofs: Fix out of bound access for corrupted isofs image
2021-11-12 14:58:33 +01:00
jbd2
jbd2: fix potential data lost in recovering journal raced with synchronizing fs bdev
2023-11-28 16:54:58 +00:00
jffs2
jffs2: reduce stack usage in jffs2_build_xattr_subsystem()
2023-07-27 08:44:13 +02:00
jfs
jfs: fix array-index-out-of-bounds in diAlloc
2023-11-28 16:54:51 +00:00
kernfs
kernfs: fix missing kernfs_idr_lock to remove an ID from the IDR
2023-07-27 08:44:05 +02:00
lockd
fs: lockd: avoid possible wrong NULL parameter
2023-09-19 12:20:15 +02:00
minix
minix: fix bug when opening a file with O_DIRECT
2022-04-13 21:01:01 +02:00
nfs
NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO
2023-11-28 16:54:53 +00:00
nfs_common
nfs_common: need lock during iterate through the list
2020-12-30 11:53:45 +01:00
nfsd
nfsd: lock_rename() needs both directories to live on the same fs
2023-12-08 08:46:10 +01:00
nilfs2
nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage()
2023-12-13 18:27:02 +01:00
nls
fs/nls: make load_nls() take a const parameter
2023-09-19 12:20:04 +02:00
notify
fanotify: disallow mount/sb marks on kernel internal pseudo fs
2023-07-27 08:44:15 +02:00
ntfs
ntfs: check overflow when iterating ATTR_RECORDs
2022-11-25 17:45:57 +01:00
ocfs2
fs: ocfs2: namei: check return value of ocfs2_add_entry()
2023-09-19 12:20:09 +02:00
omfs
…
openpromfs
…
orangefs
orangefs: Fix kmemleak in orangefs_{kernel,client}_debug_init()
2023-01-14 10:16:20 +01:00
overlayfs
ima: detect changes to the backing overlay file
2023-11-28 16:54:57 +00:00
proc
watchdog: move softlockup_panic back to early_param
2023-11-28 16:54:56 +00:00
pstore
pstore/platform: Add check for kstrdup
2023-11-20 11:06:44 +01:00
qnx4
qnx4: work around gcc false positive warning bug
2021-09-30 10:11:08 +02:00
qnx6
…
quota
quota: explicitly forbid quota files from being encrypted
2023-11-28 16:54:58 +00:00
ramfs
shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs
2023-07-27 08:44:13 +02:00
reiserfs
reiserfs: Check the return value from __getblk()
2023-09-19 12:20:06 +02:00
romfs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-10-24 12:26:05 -07:00
squashfs
revert "squashfs: harden sanity check in squashfs_read_xattr_id_table"
2023-02-22 12:55:56 +01:00
sysfs
…
sysv
fs/sysv: Null check to prevent null-ptr-deref bug
2023-08-11 11:57:53 +02:00
tracefs
tracefs: Add missing lockdown check to tracefs_create_dir()
2023-09-23 11:01:10 +02:00
ubifs
ubifs: Free memory for tmpfile name
2023-05-17 11:47:35 +02:00
udf
udf: initialize newblock to 0
2023-09-19 12:20:23 +02:00
ufs
Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2020-10-24 12:26:05 -07:00
unicode
…
vboxsf
vboxfs: fix broken legacy mount signature checking
2021-10-17 10:43:33 +02:00
verity
fsverity: skip PKCS#7 parser when keyring is empty
2023-09-19 12:20:22 +02:00
xfs
xfs: verify buffer contents when we skip log replay
2023-06-14 11:09:59 +02:00
zonefs
zonefs: Fix error message in zonefs_file_dio_append()
2023-04-05 11:23:51 +02:00
aio.c
aio: fix mremap after fork null-deref
2023-02-22 12:55:54 +01:00
anon_inodes.c
…
attr.c
attr: block mode changes of symlinks
2023-09-23 11:01:09 +02:00
bad_inode.c
…
binfmt_aout.c
…
binfmt_elf_fdpic.c
fs: binfmt_elf_efpic: fix personality for ELF-FDPIC
2023-10-10 21:53:35 +02:00
binfmt_elf.c
fs/binfmt_elf: Fix memory leak in load_elf_binary()
2022-11-03 23:57:49 +09:00
binfmt_em86.c
…
binfmt_flat.c
binfmt_flat: do not stop relocating GOT entries prematurely on riscv
2022-06-09 10:20:47 +02:00
binfmt_misc.c
binfmt_misc: fix shift-out-of-bounds in check_special_flags
2023-01-14 10:16:13 +01:00
binfmt_script.c
…
block_dev.c
block: fix a race between del_gendisk and BLKRRPART
2021-06-03 09:00:45 +02:00
buffer.c
mm: fs: initialize fsdata passed to write_begin/write_end interface
2022-11-25 17:45:56 +01:00
char_dev.c
chardev: fix error handling in cdev_device_add()
2023-01-14 10:15:59 +01:00
compat_binfmt_elf.c
…
coredump.c
coredump: Limit what can interrupt coredumps
2023-01-04 11:39:22 +01:00
d_path.c
fs: fix NULL dereference due to data race in prepend_path()
2020-10-14 14:54:45 -07:00
dax.c
dax: fix cache flush on PMD-mapped pages
2022-06-09 10:21:16 +02:00
dcache.c
…
dcookies.c
…
direct-io.c
fs: direct-io: fix missing sdio->boundary
2021-04-14 08:41:58 +02:00
drop_caches.c
…
eventfd.c
eventfd: prevent underflow for eventfd semaphores
2023-09-19 12:20:06 +02:00
eventpoll.c
epoll: ep_autoremove_wake_function should use list_del_init_careful
2023-06-21 15:45:37 +02:00
exec.c
exec: Copy oldsighand->action under spin-lock
2022-11-03 23:57:49 +09:00
fcntl.c
fcntl: fix potential deadlocks for &fown_struct.lock
2022-10-30 09:41:18 +01:00
fhandle.c
…
file_table.c
SUNRPC: Ensure we flush any closed sockets before xs_xprt_free()
2022-05-18 10:23:48 +02:00
file.c
file: reinstate f_pos locking optimization for regular files
2023-08-11 11:57:53 +02:00
filesystems.c
…
fs_context.c
fs: avoid empty option when generating legacy mount string
2023-07-27 08:44:13 +02:00
fs_parser.c
fs_parse: mark fs_param_bad_value() as static
2020-10-13 18:38:27 -07:00
fs_pin.c
…
fs_struct.c
…
fs_types.c
…
fs-writeback.c
writeback: fix call of incorrect macro
2023-05-17 11:48:10 +02:00
fsopen.c
…
init.c
…
inode.c
fs: add ctime accessors infrastructure
2023-12-08 08:46:15 +01:00
internal.h
fs: Establish locking order for unrelated directories
2023-07-27 08:44:13 +02:00
ioctl.c
fs: fix an infinite loop in iomap_fiemap
2022-05-25 09:17:54 +02:00
Kconfig
tmpfs: disallow CONFIG_TMPFS_INODE64 on alpha
2021-02-17 11:02:21 +01:00
Kconfig.binfmt
…
kernel_read_file.c
vfs: check fd has read access in kernel_read_file_from_fd()
2021-10-27 09:56:51 +02:00
libfs.c
libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value
2023-01-14 10:15:19 +01:00
locks.c
locks: fix KASAN: use-after-free in trace_event_raw_event_filelock_lock
2023-09-23 11:01:04 +02:00
Makefile
io_uring: import 5.15-stable io_uring
2023-01-04 11:39:23 +01:00
mbcache.c
mbcache: Avoid nesting of cache->c_list_lock under bit locks
2023-01-14 10:16:50 +01:00
mount.h
…
mpage.c
…
namei.c
fs: Fix error checking for d_hash_and_lookup()
2023-09-19 12:20:06 +02:00
namespace.c
fs: warn about impending deprecation of mandatory locks
2021-08-26 08:35:57 -04:00
no-block.c
…
nsfs.c
…
open.c
open: make RESOLVE_CACHED correctly test for O_TMPFILE
2023-08-11 11:57:53 +02:00
pipe.c
pipe: Fix missing lock in pipe_resize_ring()
2022-06-06 08:42:41 +02:00
pnode.c
pnode: terminate at peers of source
2023-01-14 10:16:27 +01:00
pnode.h
mount: fix mounting of detached mounts onto targets that reside on shared mounts
2021-03-17 17:06:13 +01:00
posix_acl.c
…
proc_namespace.c
proc mountinfo: make splice available again
2020-12-30 11:54:02 +01:00
read_write.c
vfs: fix copy_file_range() averts filesystem freeze protection
2022-12-19 12:27:30 +01:00
readdir.c
readdir: make sure to verify directory entry for legacy interfaces too
2021-04-21 13:00:54 +02:00
remap_range.c
fs/remap: constrain dedupe of EOF blocks
2022-07-21 21:20:01 +02:00
select.c
select: Fix indefinitely sleeping task in poll_schedule_timeout()
2022-01-29 10:26:11 +01:00
seq_file.c
seq_file: disallow extremely large seq buffer allocations
2021-07-20 16:05:59 +02:00
signalfd.c
io_uring: disable polling pollfree files
2022-09-05 10:28:58 +02:00
splice.c
Revert "fs: check FMODE_LSEEK to control internal pipe splicing"
2022-10-17 17:26:07 +02:00
stack.c
…
stat.c
stat: fix inconsistency between struct stat and struct compat_stat
2022-04-27 13:53:54 +02:00
statfs.c
statfs: enforce statfs[64] structure initialization
2023-05-30 12:57:55 +01:00
super.c
fs: Protect reconfiguration of sb read-write from racing writes
2023-08-11 11:57:54 +02:00
sync.c
vfs: make sync_filesystem return errors from ->sync_fs
2022-08-31 17:15:14 +02:00
timerfd.c
…
userfaultfd.c
userfaultfd: open userfaultfds with O_RDONLY
2022-10-26 13:25:17 +02:00
utimes.c
…
xattr.c
fs: don't audit the capability check in simple_xattr_list()
2023-01-14 10:15:16 +01:00