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linux/fs
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Paulo Alcantara f47e3f60f2 smb: client: fix OOB in smb2_query_reparse_point() 
[ Upstream commit 3a42709fa9 ]

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: 2e4564b31b ("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 15:13:32 +01:00
..
9p 9p: v9fs_listxattr: fix %s null argument warning 2023-11-28 16:56:19 +00:00
adfs
affs affs: initialize fsdata in affs_truncate() 2023-02-01 08:27:06 +01:00
afs afs: Fix use-after-free due to get/remove race in volume tree 2024-01-05 15:13:30 +01:00
autofs autofs: fix memory leak of waitqueues in autofs_catatonic_mode 2023-09-23 11:09:54 +02:00
befs
bfs
btrfs btrfs: do not allow non subvolume root targets for snapshot 2023-12-20 15:17:41 +01:00
cachefiles fs: add is_idmapped_mnt() helper 2022-07-02 16:41:14 +02:00
ceph ceph: fix type promotion bug on 32bit systems 2023-10-19 23:05:36 +02:00
cifs smb: client: fix OOB in smb2_query_reparse_point() 2024-01-05 15:13:32 +01:00
coda coda: Avoid partial allocation of sig_inputArgs 2023-03-10 09:39:50 +01:00
configfs configfs: fix possible memory leak in configfs_create_dir() 2022-12-31 13:14:15 +01:00
cramfs
crypto fscrypt: fix keyring memory leak on mount failure 2022-11-10 18:15:37 +01:00
debugfs debugfs: fix error when writing negative value to atomic_t debugfs file 2022-12-31 13:14:03 +01:00
devpts fsnotify: fix fsnotify hooks in pseudo filesystems 2022-02-01 17:27:01 +01:00
dlm dlm: fix plock lookup when using multiple lockspaces 2023-09-19 12:22:52 +02:00
ecryptfs fs: add is_idmapped_mnt() helper 2022-07-02 16:41:14 +02:00
efivarfs
efs
erofs erofs: ensure that the post-EOF tails are all zeroed 2023-09-06 21:28:37 +01:00
exfat exfat: support handle zero-size directory 2023-11-28 16:56:19 +00:00
exportfs exportfs: support idmapped mounts 2022-06-09 10:23:32 +02:00
ext2 ext2: fix datatype of block number in ext2_xattr_set2() 2023-09-23 11:09:57 +02:00
ext4 ext4: prevent the normalized size from exceeding EXT_MAX_BLOCKS 2023-12-20 15:17:41 +01:00
f2fs f2fs: avoid format-overflow warning 2023-11-28 16:56:34 +00:00
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 fuse: dax: set fc->dax to NULL in fuse_dax_conn_free() 2023-12-20 15:17:38 +01:00
gfs2 gfs2: Silence "suspicious RCU usage in gfs2_permission" warning 2023-11-28 16:56:22 +00:00
hfs hfs: fix missing hfs_bnode_get() in __hfs_bnode_create 2023-03-10 09:39:57 +01:00
hfsplus fs: hfsplus: remove WARN_ON() from hfsplus_cat_{read,write}_inode() 2023-05-24 17:36:43 +01:00
hostfs hostfs: support splice_write 2021-08-26 22:28:02 +02:00
hpfs
hugetlbfs hugetlbfs: fix null-ptr-deref in hugetlbfs_parse_param() 2022-12-31 13:14:44 +01:00
iomap iomap: update ki_pos a little later in iomap_dio_complete 2023-12-08 08:48:05 +01:00
isofs isofs: Fix out of bound access for corrupted isofs image 2021-11-12 15:05:50 +01:00
jbd2 jbd2: fix potential data lost in recovering journal raced with synchronizing fs bdev 2023-11-28 16:56:30 +00:00
jffs2 jffs2: reduce stack usage in jffs2_build_xattr_subsystem() 2023-07-23 13:47:34 +02:00
jfs jfs: fix array-index-out-of-bounds in diAlloc 2023-11-28 16:56:18 +00:00
kernfs kernfs: fix missing kernfs_idr_lock to remove an ID from the IDR 2023-07-23 13:47:23 +02:00
ksmbd ksmbd: don't update ->op_state as OPLOCK_STATE_NONE on error 2023-12-23 10:42:00 +01:00
lockd fs: lockd: avoid possible wrong NULL parameter 2023-09-19 12:22:43 +02:00
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 NFSv4.1: fix SP4_MACH_CRED protection for pnfs IO 2023-11-28 16:56:21 +00:00
nfs_common nfs: Fix kerneldoc warning shown up by W=1 2021-10-04 22:02:17 +01:00
nfsd nfsd: fix file memleak on client_opens_release 2023-11-28 16:56:34 +00:00
nilfs2 nilfs2: prevent WARNING in nilfs_sufile_set_segment_usage() 2023-12-13 18:36:43 +01:00
nls fs/nls: make load_nls() take a const parameter 2023-09-19 12:22:27 +02:00
notify fanotify: disallow mount/sb marks on kernel internal pseudo fs 2023-07-23 13:47:36 +02:00
ntfs ntfs: check overflow when iterating ATTR_RECORDs 2022-11-26 09:24:52 +01:00
ntfs3 fs/ntfs3: Avoid possible memory leak 2023-11-08 17:26:46 +01:00
ocfs2 fs: ocfs2: namei: check return value of ocfs2_add_entry() 2023-09-19 12:22:34 +02:00
omfs
openpromfs
orangefs orangefs: Fix kmemleak in orangefs_{kernel,client}_debug_init() 2022-12-31 13:14:44 +01:00
overlayfs ima: detect changes to the backing overlay file 2023-11-28 16:56:29 +00:00
proc proc: sysctl: prevent aliased sysctls from getting passed to init 2023-12-03 07:31:24 +01:00
pstore pstore/platform: Add check for kstrdup 2023-11-20 11:08:13 +01:00
qnx4 qnx4: work around gcc false positive warning bug 2021-09-21 08:36:48 -07:00
qnx6
quota quota: explicitly forbid quota files from being encrypted 2023-11-28 16:56:31 +00:00
ramfs shmem: use ramfs_kill_sb() for kill_sb method of ramfs-based tmpfs 2023-07-23 13:47:33 +02:00
reiserfs reiserfs: Check the return value from __getblk() 2023-09-19 12:22:30 +02:00
romfs
smbfs_common cifs: Fix crash on unload of cifs_arc4.ko 2021-12-14 10:57:12 +01:00
squashfs revert "squashfs: harden sanity check in squashfs_read_xattr_id_table" 2023-02-22 12:57:07 +01:00
sysfs
sysv fs/sysv: Null check to prevent null-ptr-deref bug 2023-08-11 15:13:58 +02:00
tracefs tracefs: Add missing lockdown check to tracefs_create_dir() 2023-09-23 11:10:02 +02:00
ubifs ubifs: Fix memory leak in do_rename 2023-05-17 11:50:14 +02:00
udf udf: initialize newblock to 0 2023-09-19 12:22:53 +02:00
ufs
unicode
vboxsf vboxfs: fix broken legacy mount signature checking 2021-09-27 11:26:21 -07:00
verity fsverity: skip PKCS#7 parser when keyring is empty 2023-09-19 12:22:52 +02:00
xfs xfs: Fix unreferenced object reported by kmemleak in xfs_sysfs_init() 2023-11-28 16:56:26 +00:00
zonefs zonefs: Fix error message in zonefs_file_dio_append() 2023-04-05 11:25:01 +02:00
aio.c aio: fix mremap after fork null-deref 2023-02-22 12:57:05 +01:00
anon_inodes.c
attr.c attr: block mode changes of symlinks 2023-09-23 11:10:01 +02:00
bad_inode.c
binfmt_aout.c binfmt: a.out: Fix bogus semicolon 2021-09-05 10:15:05 -07:00
binfmt_elf_fdpic.c fs: binfmt_elf_efpic: fix personality for ELF-FDPIC 2023-10-06 13:18:24 +02:00
binfmt_elf.c fs/binfmt_elf: Fix memory leak in load_elf_binary() 2022-11-03 23:59:12 +09:00
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_misc: fix shift-out-of-bounds in check_special_flags 2022-12-31 13:14:39 +01:00
binfmt_script.c
buffer.c mm: fs: initialize fsdata passed to write_begin/write_end interface 2022-11-26 09:24:51 +01:00
char_dev.c chardev: fix error handling in cdev_device_add() 2022-12-31 13:14:30 +01:00
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 fsdax: Fix infinite loop in dax_iomap_rw() 2022-09-28 11:11:56 +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: prevent underflow for eventfd semaphores 2023-09-19 12:22:30 +02:00
eventpoll.c epoll: ep_autoremove_wake_function should use list_del_init_careful 2023-06-21 15:59:14 +02:00
exec.c exec: Copy oldsighand->action under spin-lock 2022-11-03 23:59:12 +09:00
fcntl.c Merge branch 'akpm' (patches from Andrew) 2021-09-03 10:08:28 -07:00
fhandle.c
file_table.c locks: fix TOCTOU race when granting write lease 2022-10-26 12:34:58 +02:00
file.c file: reinstate f_pos locking optimization for regular files 2023-08-11 15:13:58 +02:00
filesystems.c fs: simplify get_filesystem_list / get_all_fs_names 2021-08-23 01:25:40 -04:00
fs_context.c fs: avoid empty option when generating legacy mount string 2023-07-23 13:47:34 +02:00
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
fs-writeback.c writeback, cgroup: switch inodes with dirty timestamps to release dying cgwbs 2023-11-20 11:08:13 +01:00
fsopen.c
init.c
inode.c fs: add ctime accessors infrastructure 2023-12-08 08:48:04 +01:00
internal.h nfs: use vfs setgid helper 2023-08-30 16:18:19 +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
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 libfs: add DEFINE_SIMPLE_ATTRIBUTE_SIGNED for signed value 2022-12-31 13:14:03 +01:00
locks.c locks: fix KASAN: use-after-free in trace_event_raw_event_filelock_lock 2023-09-23 11:09:55 +02:00
Makefile io_uring: move to separate directory 2022-12-14 11:37:31 +01:00
mbcache.c mbcache: Avoid nesting of cache->c_list_lock under bit locks 2023-01-12 11:59:20 +01:00
mount.h
mpage.c
namei.c ksmbd: fix racy issue from using ->d_parent and ->d_name 2023-12-23 10:41:55 +01:00
namespace.c fs: drop peer group ids under namespace lock 2023-04-13 16:48:25 +02:00
no-block.c
nsfs.c
open.c open: make RESOLVE_CACHED correctly test for O_TMPFILE 2023-08-11 15:13:57 +02:00
pipe.c pipe: Fix missing lock in pipe_resize_ring() 2022-06-06 08:43:37 +02:00
pnode.c pnode: terminate at peers of source 2023-01-12 11:58:47 +01:00
pnode.h
posix_acl.c fs: fix acl translation 2022-07-02 16:41:17 +02:00
proc_namespace.c fs: add is_idmapped_mnt() helper 2022-07-02 16:41:14 +02:00
read_write.c vfs: fix copy_file_range() averts filesystem freeze protection 2022-12-19 12:36:39 +01:00
readdir.c
remap_range.c fs/remap: constrain dedupe of EOF blocks 2022-07-21 21:24:14 +02:00
select.c select: Fix indefinitely sleeping task in poll_schedule_timeout() 2022-01-29 10:58:25 +01:00
seq_file.c rxrpc: Fix locking issue 2022-07-12 16:35:08 +02:00
signalfd.c signalfd: use wake_up_pollfree() 2021-12-14 10:57:15 +01:00
splice.c Revert "fs: check FMODE_LSEEK to control internal pipe splicing" 2022-10-26 12:34:17 +02:00
stack.c
stat.c stat: fix inconsistency between struct stat and struct compat_stat 2022-04-27 14:38:57 +02:00
statfs.c statfs: enforce statfs[64] structure initialization 2023-05-24 17:36:54 +01:00
super.c fs: Protect reconfiguration of sb read-write from racing writes 2023-08-11 15:13:58 +02:00
sync.c vfs: make sync_filesystem return errors from ->sync_fs 2022-04-27 14:38:50 +02:00
timerfd.c
userfaultfd.c userfaultfd: open userfaultfds with O_RDONLY 2022-10-26 12:34:36 +02:00
utimes.c
xattr.c fs: don't audit the capability check in simple_xattr_list() 2022-12-31 13:14:01 +01:00