CVE-2022-50363

Estado: ModificadaMedia (5.5)—

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:

Detalles técnicos trazas, registros y código del informe original

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

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Puntuación base: 5.5

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.40%
Percentil entre todas las CVEs puntuadas: 32
Fecha de la puntuación: 6/10/2026

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

CWE-416
CWE-416

Referencias

JSON original (NVD)

Mostrar

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  "id": "CVE-2022-50363",
  "cveTags": [],
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2022-50363",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
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          "version": "2.0.3",
          "timestamp": "2026-01-14T18:34:03.419922Z"
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          "userInteraction": "NONE",
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  "published": "2025-09-17T15:15:35.107",
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  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nskmsg: pass gfp argument to alloc_sk_msg()\n\nsyzbot found that alloc_sk_msg() could be called from a\nnon sleepable context. sk_psock_verdict_recv() uses\nrcu_read_lock() protection.\n\nWe need the callers to pass a gfp_t argument to avoid issues.\n\nsyzbot report was:\n\nBUG: sleeping function called from invalid context at include/linux/sched/mm.h:274\nin_atomic(): 0, irqs_disabled(): 0, non_block: 0, pid: 3613, name: syz-executor414\npreempt_count: 0, expected: 0\nRCU nest depth: 1, expected: 0\nINFO: lockdep is turned off.\nCPU: 0 PID: 3613 Comm: syz-executor414 Not tainted 6.0.0-syzkaller-09589-g55be6084c8e0 #0\nHardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022\nCall Trace:\n<TASK>\n__dump_stack lib/dump_stack.c:88 [inline]\ndump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106\n__might_resched+0x538/0x6a0 kernel/sched/core.c:9877\nmight_alloc include/linux/sched/mm.h:274 [inline]\nslab_pre_alloc_hook mm/slab.h:700 [inline]\nslab_alloc_node mm/slub.c:3162 [inline]\nslab_alloc mm/slub.c:3256 [inline]\nkmem_cache_alloc_trace+0x59/0x310 mm/slub.c:3287\nkmalloc include/linux/slab.h:600 [inline]\nkzalloc include/linux/slab.h:733 [inline]\nalloc_sk_msg net/core/skmsg.c:507 [inline]\nsk_psock_skb_ingress_self+0x5c/0x330 net/core/skmsg.c:600\nsk_psock_verdict_apply+0x395/0x440 net/core/skmsg.c:1014\nsk_psock_verdict_recv+0x34d/0x560 net/core/skmsg.c:1201\ntcp_read_skb+0x4a1/0x790 net/ipv4/tcp.c:1770\ntcp_rcv_established+0x129d/0x1a10 net/ipv4/tcp_input.c:5971\ntcp_v4_do_rcv+0x479/0xac0 net/ipv4/tcp_ipv4.c:1681\nsk_backlog_rcv include/net/sock.h:1109 [inline]\n__release_sock+0x1d8/0x4c0 net/core/sock.c:2906\nrelease_sock+0x5d/0x1c0 net/core/sock.c:3462\ntcp_sendmsg+0x36/0x40 net/ipv4/tcp.c:1483\nsock_sendmsg_nosec net/socket.c:714 [inline]\nsock_sendmsg net/socket.c:734 [inline]\n__sys_sendto+0x46d/0x5f0 net/socket.c:2117\n__do_sys_sendto net/socket.c:2129 [inline]\n__se_sys_sendto net/socket.c:2125 [inline]\n__x64_sys_sendto+0xda/0xf0 net/socket.c:2125\ndo_syscall_x64 arch/x86/entry/common.c:50 [inline]\ndo_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80\nentry_SYSCALL_64_after_hwframe+0x63/0xcd"
    }
  ],
  "lastModified": "2026-08-04T10:18:12.970",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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}