CVE-2022-49877
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
bpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues
When running `test_sockmap` selftests, the following warning appears:
The root case is in commit 84472b436e76 ("bpf, sockmap: Fix more uncharged while msg has more_data"), where I used msg->sg.size to replace the tosend, causing breakage:
Detalles técnicos trazas, registros y código del informe original
WARNING: CPU: 2 PID: 197 at net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0
Call Trace:
<TASK>
inet_csk_destroy_sock+0x55/0x110
tcp_rcv_state_process+0xd28/0x1380
? tcp_v4_do_rcv+0x77/0x2c0
tcp_v4_do_rcv+0x77/0x2c0
__release_sock+0x106/0x130
__tcp_close+0x1a7/0x4e0
tcp_close+0x20/0x70
inet_release+0x3c/0x80
__sock_release+0x3a/0xb0
sock_close+0x14/0x20
__fput+0xa3/0x260
task_work_run+0x59/0xb0
exit_to_user_mode_prepare+0x1b3/0x1c0
syscall_exit_to_user_mode+0x19/0x50
do_syscall_64+0x48/0x90
entry_SYSCALL_64_after_hwframe+0x44/0xae
if (msg->apply_bytes && msg->apply_bytes < tosend)
tosend = psock->apply_bytes;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: 0.20%
- Percentil entre todas las CVEs puntuadas: 9
- Fecha de la puntuación: 5/10/2026
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)
CWE
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/14e8bc3bf7bd6af64d7538a0684c8238d96cdfd7
- https://git.kernel.org/stable/c/8ec95b94716a1e4d126edc3fb2bc426a717e2dba
- https://git.kernel.org/stable/c/95adbd2ac8de82e43fd6b347e7e1b47f74dc1abb
- https://git.kernel.org/stable/c/cc21dc48a78cc9e5af9a4d039cd456446a6e73ff
- https://git.kernel.org/stable/c/d975bec1eaeb52341acc9273db79ddb078220399
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf, sockmap: Fix the sk->sk_forward_alloc warning of sk_stream_kill_queues\n\nWhen running `test_sockmap` selftests, the following warning appears:\n\n WARNING: CPU: 2 PID: 197 at net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0\n Call Trace:\n <TASK>\n inet_csk_destroy_sock+0x55/0x110\n tcp_rcv_state_process+0xd28/0x1380\n ? tcp_v4_do_rcv+0x77/0x2c0\n tcp_v4_do_rcv+0x77/0x2c0\n __release_sock+0x106/0x130\n __tcp_close+0x1a7/0x4e0\n tcp_close+0x20/0x70\n inet_release+0x3c/0x80\n __sock_release+0x3a/0xb0\n sock_close+0x14/0x20\n __fput+0xa3/0x260\n task_work_run+0x59/0xb0\n exit_to_user_mode_prepare+0x1b3/0x1c0\n syscall_exit_to_user_mode+0x19/0x50\n do_syscall_64+0x48/0x90\n entry_SYSCALL_64_after_hwframe+0x44/0xae\n\nThe root case is in commit 84472b436e76 (\"bpf, sockmap: Fix more uncharged\nwhile msg has more_data\"), where I used msg->sg.size to replace the tosend,\ncausing breakage:\n\n if (msg->apply_bytes && msg->apply_bytes < tosend)\n tosend = psock->apply_bytes;"
},
{
"lang": "es",
"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: bpf, sockmap: corrige la advertencia sk->sk_forward_alloc de sk_stream_kill_queues Al ejecutar las pruebas automáticas `test_sockmap`, aparece la siguiente advertencia: ADVERTENCIA: CPU: 2 PID: 197 en net/core/stream.c:205 sk_stream_kill_queues+0xd3/0xf0 Seguimiento de llamadas: inet_csk_destroy_sock+0x55/0x110 tcp_rcv_state_process+0xd28/0x1380 ? tcp_v4_do_rcv+0x77/0x2c0 tcp_v4_do_rcv+0x77/0x2c0 __release_sock+0x106/0x130 __tcp_close+0x1a7/0x4e0 tcp_close+0x20/0x70 inet_release+0x3c/0x80 __sock_release+0x3a/0xb0 sock_close+0x14/0x20 __fput+0xa3/0x260 task_work_run+0x59/0xb0 exit_to_user_mode_prepare+0x1b3/0x1c0 syscall_exit_to_user_mode+0x19/0x50 do_syscall_64+0x48/0x90 entry_SYSCALL_64_after_hwframe+0x44/0xae El caso raíz está en el commit 84472b436e76 (\"bpf, sockmap: Arreglar más archivos no cargados mientras msg tiene more_data\"), donde utilicé msg->sg.size para reemplazar tosend, lo que causó fallas: if (msg->apply_bytes && msg->apply_bytes < tosend) tosend = psock->apply_bytes;"
}
],
"lastModified": "2026-06-17T05:19:23.687",
"configurations": [
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