CVE-2022-49957
Estado: AnalizadaMedia (5.5)—
In the Linux kernel, the following vulnerability has been resolved:
kcm: fix strp_init() order and cleanup
strp_init() is called just a few lines above this csk->sk_user_data check, it also initializes strp->work etc., therefore, it is unnecessary to call strp_done() to cancel the freshly initialized work.
And if sk_user_data is already used by KCM, psock->strp should not be touched, particularly strp->work state, so we need to move strp_init() after the csk->sk_user_data check.
This also makes a lockdep warning reported by syzbot go away.
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: 0.26%
- Percentil entre todas las CVEs puntuadas: 16
- 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)
CWE
- CWE-908
Referencias
- https://git.kernel.org/stable/c/0946ff31d1a8778787bf6708beb20f38715267cc
- https://git.kernel.org/stable/c/1b6666964ca1de93a7bf06e122bcf3616dbd33a9
- https://git.kernel.org/stable/c/473f394953216614087f4179e55cdf0cf616a13b
- https://git.kernel.org/stable/c/55fb8c3baa8071c5d533a9ad48624e44e2a04ef5
- https://git.kernel.org/stable/c/8fc29ff3910f3af08a7c40a75d436b5720efe2bf
- https://git.kernel.org/stable/c/a8a0c321319ad64a5427d6172cd9c23b4d6ca1e8
- https://git.kernel.org/stable/c/f865976baa85915c7672f351b74d5974b93215f6
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nkcm: fix strp_init() order and cleanup\n\nstrp_init() is called just a few lines above this csk->sk_user_data\ncheck, it also initializes strp->work etc., therefore, it is\nunnecessary to call strp_done() to cancel the freshly initialized\nwork.\n\nAnd if sk_user_data is already used by KCM, psock->strp should not be\ntouched, particularly strp->work state, so we need to move strp_init()\nafter the csk->sk_user_data check.\n\nThis also makes a lockdep warning reported by syzbot go away."
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: kcm: corrección del orden y la limpieza de strp_init(). strp_init() se llama solo unas líneas por encima de la comprobación csk->sk_user_data; también inicializa strp->work, etc., por lo que no es necesario llamar a strp_done() para cancelar el trabajo recién inicializado. Si KCM ya utiliza sk_user_data, no se debe modificar psock->strp, en particular el estado strp->work, por lo que es necesario mover strp_init() después de la comprobación csk->sk_user_data. Esto también elimina la advertencia de lockdep reportada por syzbot."
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