kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-20 19:23:40 +00:00
Code Issues Releases Packages Activity
No description
1,073,381 commits 117 branches 5,799 tags 5.6 GiB
  • C 96.9%
  • Assembly 0.9%
  • Rust 0.6%
  • Shell 0.6%
  • Python 0.5%
  • Other 0.3%
Find a file
Paulo Alcantara 4a788ebbb1 smb: client: fix NULL ptr deref in crypto_aead_setkey() 
commit 4bdec0d1f6 upstream.

Neither SMB3.0 or SMB3.02 supports encryption negotiate context, so
when SMB2_GLOBAL_CAP_ENCRYPTION flag is set in the negotiate response,
the client uses AES-128-CCM as the default cipher.  See MS-SMB2
3.3.5.4.

Commit b0abcd65ec ("smb: client: fix UAF in async decryption") added
a @server->cipher_type check to conditionally call
smb3_crypto_aead_allocate(), but that check would always be false as
@server->cipher_type is unset for SMB3.02.

Fix the following KASAN splat by setting @server->cipher_type for
SMB3.02 as well.

mount.cifs //srv/share /mnt -o vers=3.02,seal,...

BUG: KASAN: null-ptr-deref in crypto_aead_setkey+0x2c/0x130
Read of size 8 at addr 0000000000000020 by task mount.cifs/1095
CPU: 1 UID: 0 PID: 1095 Comm: mount.cifs Not tainted 6.12.0 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-3.fc41
04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0x5d/0x80
 ? crypto_aead_setkey+0x2c/0x130
 kasan_report+0xda/0x110
 ? crypto_aead_setkey+0x2c/0x130
 crypto_aead_setkey+0x2c/0x130
 crypt_message+0x258/0xec0 [cifs]
 ? __asan_memset+0x23/0x50
 ? __pfx_crypt_message+0x10/0x10 [cifs]
 ? mark_lock+0xb0/0x6a0
 ? hlock_class+0x32/0xb0
 ? mark_lock+0xb0/0x6a0
 smb3_init_transform_rq+0x352/0x3f0 [cifs]
 ? lock_acquire.part.0+0xf4/0x2a0
 smb_send_rqst+0x144/0x230 [cifs]
 ? __pfx_smb_send_rqst+0x10/0x10 [cifs]
 ? hlock_class+0x32/0xb0
 ? smb2_setup_request+0x225/0x3a0 [cifs]
 ? __pfx_cifs_compound_last_callback+0x10/0x10 [cifs]
 compound_send_recv+0x59b/0x1140 [cifs]
 ? __pfx_compound_send_recv+0x10/0x10 [cifs]
 ? __create_object+0x5e/0x90
 ? hlock_class+0x32/0xb0
 ? do_raw_spin_unlock+0x9a/0xf0
 cifs_send_recv+0x23/0x30 [cifs]
 SMB2_tcon+0x3ec/0xb30 [cifs]
 ? __pfx_SMB2_tcon+0x10/0x10 [cifs]
 ? lock_acquire.part.0+0xf4/0x2a0
 ? __pfx_lock_release+0x10/0x10
 ? do_raw_spin_trylock+0xc6/0x120
 ? lock_acquire+0x3f/0x90
 ? _get_xid+0x16/0xd0 [cifs]
 ? __pfx_SMB2_tcon+0x10/0x10 [cifs]
 ? cifs_get_smb_ses+0xcdd/0x10a0 [cifs]
 cifs_get_smb_ses+0xcdd/0x10a0 [cifs]
 ? __pfx_cifs_get_smb_ses+0x10/0x10 [cifs]
 ? cifs_get_tcp_session+0xaa0/0xca0 [cifs]
 cifs_mount_get_session+0x8a/0x210 [cifs]
 dfs_mount_share+0x1b0/0x11d0 [cifs]
 ? __pfx___lock_acquire+0x10/0x10
 ? __pfx_dfs_mount_share+0x10/0x10 [cifs]
 ? lock_acquire.part.0+0xf4/0x2a0
 ? find_held_lock+0x8a/0xa0
 ? hlock_class+0x32/0xb0
 ? lock_release+0x203/0x5d0
 cifs_mount+0xb3/0x3d0 [cifs]
 ? do_raw_spin_trylock+0xc6/0x120
 ? __pfx_cifs_mount+0x10/0x10 [cifs]
 ? lock_acquire+0x3f/0x90
 ? find_nls+0x16/0xa0
 ? smb3_update_mnt_flags+0x372/0x3b0 [cifs]
 cifs_smb3_do_mount+0x1e2/0xc80 [cifs]
 ? __pfx_vfs_parse_fs_string+0x10/0x10
 ? __pfx_cifs_smb3_do_mount+0x10/0x10 [cifs]
 smb3_get_tree+0x1bf/0x330 [cifs]
 vfs_get_tree+0x4a/0x160
 path_mount+0x3c1/0xfb0
 ? kasan_quarantine_put+0xc7/0x1d0
 ? __pfx_path_mount+0x10/0x10
 ? kmem_cache_free+0x118/0x3e0
 ? user_path_at+0x74/0xa0
 __x64_sys_mount+0x1a6/0x1e0
 ? __pfx___x64_sys_mount+0x10/0x10
 ? mark_held_locks+0x1a/0x90
 do_syscall_64+0xbb/0x1d0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Cc: Tom Talpey <tom@talpey.com>
Reported-by: Jianhong Yin <jiyin@redhat.com>
Cc: stable@vger.kernel.org # v6.12
Fixes: b0abcd65ec ("smb: client: fix UAF in async decryption")
Signed-off-by: Paulo Alcantara (Red Hat) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
[Commit b0abcd65ec ("smb: client: fix UAF in async decryption")
fixes CVE-2024-50047 but brings NULL-pointer dereferebce. So
commit 4bdec0d1f6 ("smb: client: fix NULL ptr deref in crypto_aead_setkey()")
should be backported too.]
Signed-off-by: Jianqi Ren <jianqi.ren.cn@windriver.com>
Signed-off-by: He Zhe <zhe.he@windriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-05-02 07:44:21 +02:00
arch powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas() 2025-05-02 07:44:19 +02:00
block block: fix 'kmem_cache of name 'bio-108' already exists' 2025-04-10 14:31:51 +02:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:22:01 +02:00
crypto crypto: testmgr - some more fixes to RSA test vectors 2025-03-13 12:50:48 +01:00
Documentation scsi: libsas: Delete lldd_clear_aca callback 2025-05-02 07:44:07 +02:00
drivers nvmet-fc: Remove unused functions 2025-05-02 07:44:20 +02:00
fs smb: client: fix NULL ptr deref in crypto_aead_setkey() 2025-05-02 07:44:21 +02:00
include net: make sock_inuse_add() available 2025-05-02 07:44:20 +02:00
init initramfs: avoid filename buffer overrun 2024-12-14 19:50:42 +01:00
io_uring io_uring: fix possible deadlock in io_register_iowq_max_workers() 2024-11-17 15:06:25 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:28:45 +01:00
kernel tracing: Fix filter string testing 2025-05-02 07:44:13 +02:00
lib lib: scatterlist: fix sg_split_phys to preserve original scatterlist offsets 2025-05-02 07:44:03 +02:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
mm filemap: Fix bounds checking in filemap_read() 2025-05-02 07:44:18 +02:00
net net: make sock_inuse_add() available 2025-05-02 07:44:20 +02:00
samples samples/landlock: Fix possible NULL dereference in parse_path() 2025-03-13 12:49:57 +01:00
scripts selinux: Chain up tool resolving errors in install_policy.sh 2025-04-10 14:31:57 +02:00
security landlock: Add the errata interface 2025-05-02 07:44:20 +02:00
sound ASoC: codecs:lpass-wsa-macro: Fix logic of enabling vi channels 2025-05-02 07:44:12 +02:00
tools landlock: Add the errata interface 2025-05-02 07:44:20 +02:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:27:15 +01:00
virt KVM: Fix a data race on last_boosted_vcpu in kvm_vcpu_on_spin() 2024-10-22 15:40:41 +02:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore Remove *.orig pattern from .gitignore 2024-10-17 15:11:10 +02:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS trace: Relocate event helper files 2024-04-10 16:19:24 +02:00
Makefile kbuild: Add '-fno-builtin-wcslen' 2025-05-02 07:44:17 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.