CVE-2022-49288
Estado: AnalizadaAlta (7.8)—
In the Linux kernel, the following vulnerability has been resolved:
ALSA: pcm: Fix races among concurrent prealloc proc writes
We have no protection against concurrent PCM buffer preallocation changes via proc files, and it may potentially lead to UAF or some weird problem. This patch applies the PCM open_mutex to the proc write operation for avoiding the racy proc writes and the PCM stream open (and further operations).
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.28%
- Percentil entre todas las CVEs puntuadas: 19
- 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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation90 % - Impacto principal
T1059Command and Scripting Interpreterexecution75 %
Acceso local (AV:L) sin interacción (UI:N) con privilegios (PR:L) en Linux kernel. CWE-416 (use-after-free) en ALSA PCM permite escalada de privilegios y ejecución de código.
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-416
Referencias
- https://git.kernel.org/stable/c/37b12c16beb6f6c1c3c678c1aacbc46525c250f7
- https://git.kernel.org/stable/c/51fce708ab8986a9879ee5da946a2cc120f1036d
- https://git.kernel.org/stable/c/5ed8f8e3c4e59d0396b9ccf2e639711e24295bb6
- https://git.kernel.org/stable/c/69534c48ba8ce552ce383b3dfdb271ffe51820c3
- https://git.kernel.org/stable/c/a21d2f323b5a978dedf9ff1d50f101f85e39b3f2
- https://git.kernel.org/stable/c/b560d670c87d7d40b3cf6949246fa4c7aa65a00a
- https://git.kernel.org/stable/c/e14dca613e0a6ddc2bf6e360f16936a9f865205b
- https://git.kernel.org/stable/c/e7786c445bb67a9a6e64f66ebd6b7215b153ff7d
JSON original (NVD)
Mostrar
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