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Sean Heelan b61f04d5d7 ksmbd: Fix dangling pointer in krb_authenticate 
[ Upstream commit 1e440d5b25 ]

krb_authenticate frees sess->user and does not set the pointer
to NULL. It calls ksmbd_krb5_authenticate to reinitialise
sess->user but that function may return without doing so. If
that happens then smb2_sess_setup, which calls krb_authenticate,
will be accessing free'd memory when it later uses sess->user.

Cc: stable@vger.kernel.org
Signed-off-by: Sean Heelan <seanheelan@gmail.com>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Leon Chen <leonchen.oss@139.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2026-04-18 10:33:39 +02:00
..
9p 9p: sysfs_init: don't hardcode error to ENOMEM 2025-12-07 06:09:25 +09:00
adfs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
affs affs: don't write overlarge OFS data block size fields 2025-04-10 14:32:03 +02:00
afs afs: Fix the server_list to unuse a displaced server rather than putting it 2025-03-13 12:50:56 +01:00
autofs autofs: fix memory leak of waitqueues in autofs_catatonic_mode 2023-09-23 11:09:54 +02:00
befs isystem: ship and use stdarg.h 2021-08-19 09:02:55 +09:00
bfs bfs: Reconstruct file type when loading from disk 2026-01-19 13:09:21 +01:00
btrfs btrfs: reject root items with drop_progress and zero drop_level 2026-04-18 10:33:29 +02:00
cachefiles cachefiles: fix memory leak in cachefiles_add_cache() 2024-03-06 14:38:50 +00:00
ceph ceph: fix i_nlink underrun during async unlink 2026-04-18 10:33:14 +02:00
cifs smb: client: Fix refcount leak for cifs_sb_tlink 2026-04-18 10:33:35 +02:00
coda coda: Avoid partial allocation of sig_inputArgs 2023-03-10 09:39:50 +01:00
configfs configfs: Do not override creating attribute file failure in populate_attrs() 2025-06-27 11:05:22 +01:00
cramfs cramfs: Verify inode mode when loading from disk 2025-10-19 16:21:54 +02:00
crypto fscrypt: fix keyring memory leak on mount failure 2022-11-10 18:15:37 +01:00
debugfs debugfs: fix automount d_fsdata usage 2024-01-25 14:52:27 -08:00
devpts fsnotify: fix fsnotify hooks in pseudo filesystems 2022-02-01 17:27:01 +01:00
dlm dlm: check for defined force value in dlm_lockspace_release 2025-10-29 14:03:10 +01:00
ecryptfs ecryptfs: Fix buffer size for tag 66 packet 2024-06-16 13:39:16 +02:00
efivarfs efivarfs: Fix slab-out-of-bounds in efivarfs_d_compare 2025-09-04 14:28:46 +02:00
efs [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
erofs erofs: add GFP_NOIO in the bio completion if needed 2026-04-18 10:33:27 +02:00
exfat exfat: fix remount failure in different process environments 2026-01-19 13:09:47 +01:00
exportfs exportfs: use pr_debug for unreachable debug statements 2024-04-10 16:19:21 +02:00
ext2 minmax: add in_range() macro 2025-10-19 16:21:28 +02:00
ext4 ext4: fix use-after-free in update_super_work when racing with umount 2026-04-18 10:33:38 +02:00
f2fs f2fs: fix out-of-bounds access in sysfs attribute read/write 2026-02-19 16:21:47 +01:00
fat fat: avoid parent link count underflow in rmdir 2026-03-04 07:19:35 -05:00
freevxfs fs: Fill in max and min timestamps in superblock 2019-08-30 07:27:17 -07:00
fscache fscache: Remove an unused static variable 2021-10-04 22:13:12 +01:00
fuse fuse: fix readahead reclaim deadlock 2026-01-19 13:10:08 +01:00
gfs2 gfs2: fiemap page fault fix 2026-03-04 07:19:57 -05:00
hfs hfs: fix KMSAN uninit-value issue in hfs_find_set_zero_bits() 2025-10-29 14:03:10 +01:00
hfsplus hfsplus: pretend special inodes as regular files 2026-03-04 07:19:56 -05:00
hostfs hostfs: support splice_write 2021-08-26 22:28:02 +02:00
hpfs fs/hpfs: Fix error code for new_inode() failure in mkdir/create/mknod/symlink 2025-12-07 06:09:24 +09:00
hugetlbfs mm/hugetlb: fix folio is still mapped when deleted 2025-10-02 13:39:14 +02:00
iomap iomap: fix submission side handling of completion side errors 2026-03-04 07:19:22 -05:00
isofs isofs: Verify inode mode when loading from disk 2025-08-28 16:23:59 +02:00
jbd2 jbd2: gracefully abort on checkpointing state corruptions 2026-04-18 10:33:27 +02:00
jffs2 jffs2: check jffs2_prealloc_raw_node_refs() result in few other places 2025-06-27 11:05:34 +01:00
jfs jfs: nlink overflow in jfs_rename 2026-03-04 07:20:07 -05:00
kernfs fs/kernfs/dir: obey S_ISGID 2024-02-23 08:54:51 +01:00
ksmbd ksmbd: Fix dangling pointer in krb_authenticate 2026-04-18 10:33:39 +02:00
lockd lockd: fix vfs_test_lock() calls 2026-01-19 13:10:10 +01:00
minix minix: Add required sanity checking to minix_check_superblock() 2026-03-04 07:19:57 -05:00
netfs netfs: fix parameter of cleanup() 2021-12-29 12:28:59 +01:00
nfs pNFS: fix a missing wake up while waiting on NFS_LAYOUT_DRAIN 2026-03-04 07:19:44 -05:00
nfs_common NFSD: Remove NFSERR_EAGAIN 2026-01-19 13:10:18 +01:00
nfsd nfsd: fix return error code for nfsd_map_name_to_[ug]id 2026-03-04 07:20:31 -05:00
nilfs2 nilfs2: Fix potential block overflow that cause system hang 2026-02-19 16:21:43 +01:00
nls fs/nls: Fix inconsistency between utf8_to_utf32() and utf32_to_utf8() 2026-01-19 13:09:38 +01:00
notify fsnotify: do not generate ACCESS/MODIFY events on child for special files 2026-01-19 13:09:53 +01:00
ntfs ntfs: check overflow when iterating ATTR_RECORDs 2022-11-26 09:24:52 +01:00
ntfs3 fs/ntfs3: avoid calling run_get_entry() when run == NULL in ntfs_read_run_nb_ra() 2026-03-04 07:20:18 -05:00
ocfs2 ocfs2: fix reflink preserve cleanup issue 2026-03-04 07:20:32 -05:00
omfs mm: require ->set_page_dirty to be explicitly wired up 2021-06-29 10:53:48 -07:00
openpromfs openpromfs: finish conversion to the new mount API 2024-06-16 13:39:16 +02:00
orangefs orangefs: fix xattr related buffer overflow... 2025-12-07 06:09:24 +09:00
overlayfs ovl: Fix uninit-value in ovl_fill_real 2026-03-04 07:19:47 -05:00
proc procfs: fix missing RCU protection when reading real_parent in do_task_stat() 2026-03-04 07:19:37 -05:00
pstore pstore: ram_core: fix incorrect success return when vmap() fails 2026-03-04 07:20:01 -05:00
qnx4 qnx4: work around gcc false positive warning bug 2021-09-21 08:36:48 -07:00
qnx6 [PATCH] reduce boilerplate in fsid handling 2020-09-18 16:45:50 -04:00
quota quota: flush quota_release_work upon quota writeback 2024-12-14 19:51:22 +01:00
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 romfs: check sb_set_blocksize() return value 2026-02-19 16:21:44 +01:00
smbfs_common cifs: Fix crash on unload of cifs_arc4.ko 2021-12-14 10:57:12 +01:00
squashfs Squashfs: check metadata block offset is within range 2026-04-18 10:33:09 +02:00
sysfs fs: sysfs: Fix reference leak in sysfs_break_active_protection() 2024-04-27 17:05:28 +02:00
sysv sysv: don't call sb_bread() with pointers_lock held 2024-04-13 13:01:44 +02:00
tracefs tracefs: Add missing lockdown check to tracefs_create_dir() 2023-09-23 11:10:02 +02:00
ubifs ubifs: skip dumping tnc tree when zroot is null 2025-03-13 12:50:11 +01:00
udf fs: udf: fix OOB read in lengthAllocDescs handling 2025-10-19 16:21:38 +02:00
ufs minmax: add in_range() macro 2025-10-19 16:21:28 +02:00
unicode Revert "unicode: Don't special case ignorable code points" 2024-12-14 19:51:44 +01:00
vboxsf vboxsf: fix building with GCC 15 2025-04-10 14:31:50 +02:00
verity fsverity: skip PKCS#7 parser when keyring is empty 2023-09-19 12:22:52 +02:00
xfs xfs: save ailp before dropping the AIL lock in push callbacks 2026-04-18 10:33:38 +02:00
zonefs zonefs: Improve error handling 2024-03-01 13:21:43 +01:00
aio.c fs/aio: Check IOCB_AIO_RW before the struct aio_kiocb conversion 2024-04-10 16:18:46 +02:00
anon_inodes.c fs: anon_inodes: rephrase to appropriate kernel-doc 2021-01-15 12:17:25 -05:00
attr.c attr: block mode changes of symlinks 2023-09-23 11:10:01 +02:00
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 fs/binfmt_elf: Fix memory leak in load_elf_binary() 2022-11-03 23:59:12 +09:00
binfmt_elf_fdpic.c fs: binfmt_elf_efpic: don't use missing interpreter's properties 2024-09-04 13:23:24 +02:00
binfmt_flat.c binfmt_flat: Fix integer overflow bug on 32 bit systems 2025-03-13 12:50:24 +01:00
binfmt_misc.c binfmt_misc: cleanup on filesystem umount 2024-09-04 13:23:22 +02:00
binfmt_script.c Merge branch 'akpm' (patches from Andrew) 2020-06-04 19:18:29 -07:00
buffer.c fs/buffer: fix use-after-free when call bh_read() helper 2025-08-28 16:24:34 +02:00
char_dev.c chardev: fix error handling in cdev_device_add() 2022-12-31 13:14:30 +01:00
compat_binfmt_elf.c get rid of COMPAT_ELF_EXEC_PAGESIZE 2021-01-06 08:42:51 -05:00
coredump.c coredump: hand a pidfd to the usermode coredump helper 2025-06-04 14:38:07 +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: skip read lock assertion for read-only filesystems 2025-10-29 14:03:07 +01:00
dcache.c vfs: Don't leak disconnected dentries on umount 2025-10-29 14:03:14 +01:00
direct-io.c fs: direct-io: fix missing sdio->boundary 2021-04-09 14:54:23 -07:00
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 eventpoll: Fix integer overflow in ep_loop_check_proc() 2026-04-18 10:33:08 +02:00
exec.c exec: Fix incorrect type for ret 2025-10-29 14:03:09 +01:00
fcntl.c fs: Fix file_set_fowner LSM hook inconsistencies 2024-10-17 15:11:15 +02:00
fhandle.c do_sys_name_to_handle(): use kzalloc() to fix kernel-infoleak 2024-03-26 18:21:14 -04:00
file.c fs: always return zero on success from replace_fd() 2025-10-19 16:21:39 +02:00
file_table.c fs: fix proc_handler for sysctl_nr_open 2025-03-13 12:49:50 +01:00
filesystems.c fs/filesystems: Fix potential unsigned integer underflow in fs_name() 2025-06-27 11:05:20 +01:00
fs-writeback.c writeback: fix 100% CPU usage when dirtytime_expire_interval is 0 2026-02-06 16:42:05 +01:00
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 switch the remnants of releasing the mountpoint away from fs_pin 2019-07-16 22:52:37 -04:00
fs_struct.c fs: add <linux/init_task.h> for 'init_fs' 2026-03-04 07:19:21 -05:00
fs_types.c fs: common implementation of file type 2019-01-21 17:48:13 +01:00
fsopen.c fscontext: do not consume log entries when returning -EMSGSIZE 2025-10-19 16:21:51 +02:00
init.c init: handle idmapped mounts 2021-01-24 14:27:19 +01:00
inode.c fs: move inode sysctls to its own file 2025-03-13 12:49:50 +01:00
internal.h nfs: use vfs setgid helper 2023-08-30 16:18:19 +02:00
ioctl.c lsm: new security_file_ioctl_compat() hook 2024-02-23 08:54:25 +01:00
Kconfig nfs: add missing selections of CONFIG_CRC32 2025-05-02 07:44:12 +02:00
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 better lockdep annotations for simple_recursive_removal() 2025-08-28 16:24:16 +02:00
locks.c lockd: fix vfs_test_lock() calls 2026-01-19 13:10:10 +01:00
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 mount: make {lock,unlock}_mount_hash() static 2021-01-24 14:29:34 +01:00
mpage.c block: rename BIO_MAX_PAGES to BIO_MAX_VECS 2021-03-11 07:47:48 -07:00
namei.c openat2: don't trigger automounts with RESOLVE_NO_XDEV 2025-10-19 16:21:46 +02:00
namespace.c fs: Add 'initramfs_options' to set initramfs mount options 2025-10-19 16:21:54 +02:00
no-block.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
nsfs.c nsproxy: attach to namespaces via pidfds 2020-05-13 11:41:22 +02:00
open.c allow finish_no_open(file, ERR_PTR(-E...)) 2025-12-07 06:09:22 +09:00
pipe.c fs/pipe: Fix lockdep false-positive in watchqueue pipe_write() 2024-04-10 16:19:42 +02:00
pnode.c pnode: terminate at peers of source 2023-01-12 11:58:47 +01:00
pnode.h mount: fix mounting of detached mounts onto targets that reside on shared mounts 2021-03-08 15:18:43 +01:00
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 readdir: make sure to verify directory entry for legacy interfaces too 2021-04-17 11:39:49 -07:00
remap_range.c fs/remap: constrain dedupe of EOF blocks 2022-07-21 21:24:14 +02:00
select.c select: Fix unbalanced user_access_end() 2025-03-13 12:49:51 +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 splice, net: Add a splice_eof op to file-ops and socket-ops 2025-10-29 14:03:08 +01:00
stack.c sched/rt, fs: Use CONFIG_PREEMPTION 2019-12-08 14:37:36 +01:00
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: explicitly unregister per-superblock BDIs 2024-10-17 15:10:43 +02:00
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 Fix userfaultfd_api to return EINVAL as expected 2024-07-18 13:07:42 +02:00
utimes.c utimes: handle idmapped mounts 2021-01-24 14:27:18 +01:00
xattr.c fs: don't audit the capability check in simple_xattr_list() 2022-12-31 13:14:01 +01:00