CVE-2022-50363— skmsg: pass gfp argument to alloc_sk_msg()
Quick assessment
Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于skmsg未传递gfp参数到alloc_sk_msg，可能导致在非可休眠上下文中调用分配函数。
Possible ATT&CK Techniques 1 AI
T1499 · Endpoint Denial of ServiceAffected Version Matrix 6
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 43312915b5ba20741617dd2119e835205fa8580c< 693ddd6ffc05b228ea1638f9d757c5d3541f9446 |
affected |
43312915b5ba20741617dd2119e835205fa8580c< 2d1f274b95c6e4ba6a813b3b8e7a1a38d54a0a08 |
affected | ||
6.0 |
affected | ||
< 6.0 |
unaffected | ||
6.0.6≤ 6.0.* |
unaffected | ||
6.1≤ * |
unaffected |
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I. Basic Information for CVE-2022-50363
Vulnerability Information
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Vulnerability Title
skmsg: pass gfp argument to alloc_sk_msg()
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
skmsg: pass gfp argument to alloc_sk_msg()
syzbot found that alloc_sk_msg() could be called from a
non sleepable context. sk_psock_verdict_recv() uses
rcu_read_lock() protection.
We need the callers to pass a gfp_t argument to avoid issues.
syzbot report was:
BUG: sleeping function called from invalid context at include/linux/sched/mm.h:274
in_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 3613, name: syz-executor414
preempt_count: 0, expected: 0
RCU nest depth: 1, expected: 0
INFO: lockdep is turned off.
CPU: 0 PID: 3613 Comm: syz-executor414 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
__might_resched+0x538/0x6a0 kernel/sched/core.c:9877
might_alloc include/linux/sched/mm.h:274 [inline]
slab_pre_alloc_hook mm/slab.h:700 [inline]
slab_alloc_node mm/slub.c:3162 [inline]
slab_alloc mm/slub.c:3256 [inline]
kmem_cache_alloc_trace+0x59/0x310 mm/slub.c:3287
kmalloc include/linux/slab.h:600 [inline]
kzalloc include/linux/slab.h:733 [inline]
alloc_sk_msg net/core/skmsg.c:507 [inline]
sk_psock_skb_ingress_self+0x5c/0x330 net/core/skmsg.c:600
sk_psock_verdict_apply+0x395/0x440 net/core/skmsg.c:1014
sk_psock_verdict_recv+0x34d/0x560 net/core/skmsg.c:1201
tcp_read_skb+0x4a1/0x790 net/ipv4/tcp.c:1770
tcp_rcv_established+0x129d/0x1a10 net/ipv4/tcp_input.c:5971
tcp_v4_do_rcv+0x479/0xac0 net/ipv4/tcp_ipv4.c:1681
sk_backlog_rcv include/net/sock.h:1109 [inline]
__release_sock+0x1d8/0x4c0 net/core/sock.c:2906
release_sock+0x5d/0x1c0 net/core/sock.c:3462
tcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1483
sock_sendmsg_nosec net/socket.c:714 [inline]
sock_sendmsg net/socket.c:734 [inline]
__sys_sendto+0x46d/0x5f0 net/socket.c:2117
__do_sys_sendto net/socket.c:2129 [inline]
__se_sys_sendto net/socket.c:2125 [inline]
__x64_sys_sendto+0xda/0xf0 net/socket.c:2125
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于skmsg未传递gfp参数到alloc_sk_msg，可能导致在非可休眠上下文中调用分配函数。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2022-50363
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Same Patch Batch · Linux · 2025-09-17 · 56 CVEs total
| CVE-2023-53338 | 9.8 CRITICAL | lwt: Fix return values of BPF xmit ops |
| CVE-2022-50373 | 9.8 CRITICAL | fs: dlm: fix race in lowcomms |
| CVE-2023-53360 | 9.8 CRITICAL | NFSv4.2: Rework scratch handling for READ_PLUS (again) |
| CVE-2023-53358 | 8.8 HIGH | ksmbd: fix racy issue under cocurrent smb2 tree disconnect |
| CVE-2023-53340 | 7.8 HIGH | net/mlx5: Collect command failures data only for known commands |
| CVE-2022-50368 | 7.8 HIGH | drm/msm/dsi: fix memory corruption with too many bridges |
| CVE-2022-50367 | 7.8 HIGH | fs: fix UAF/GPF bug in nilfs_mdt_destroy |
| CVE-2022-50362 | 7.8 HIGH | dmaengine: hisilicon: Add multi-thread support for a DMA channel |
| CVE-2023-53354 | 7.8 HIGH | skbuff: skb_segment, Call zero copy functions before using skbuff frags |
| CVE-2022-50355 | 7.8 HIGH | staging: vt6655: fix some erroneous memory clean-up loops |
| CVE-2022-50354 | 7.8 HIGH | drm/amdkfd: Fix kfd_process_device_init_vm error handling |
| CVE-2022-50365 | 7.5 HIGH | skbuff: Account for tail adjustment during pull operations |
| CVE-2023-53335 | 7.5 HIGH | RDMA/cxgb4: Fix potential null-ptr-deref in pass_establish() |
| CVE-2023-53336 | media: ipu-bridge: Fix null pointer deref on SSDB/PLD parsing warnings | |
| CVE-2022-50374 | Bluetooth: hci_{ldisc,serdev}: check percpu_init_rwsem() failure | |
| CVE-2022-50353 | mmc: wmt-sdmmc: fix return value check of mmc_add_host() | |
| CVE-2023-53337 | nilfs2: do not write dirty data after degenerating to read-only | |
| CVE-2022-50372 | cifs: Fix memory leak when build ntlmssp negotiate blob failed | |
| CVE-2022-50369 | drm/vkms: Fix null-ptr-deref in vkms_release() | |
| CVE-2022-50371 | led: qcom-lpg: Fix sleeping in atomic |
Showing top 20 of 56 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
Same vendor: Linux
-
CVE-2026-98384
bpf: Fix out-of-bounds read of sk_protocol in bpf_sock_destr -
CVE-2026-98383
bpf: Disallow bpf_skb_pull_data() for LWT_SEG6LOCAL -
CVE-2026-98382
bpf: Reject dev-bound-only programs on other devices -
CVE-2026-98381
veth: manage XDP program pointers during channel resize -
CVE-2026-98380
net/sched: reject IDR error pointers when deleting actions
V. Comments for CVE-2022-50363
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