CVE-2024-26777
Estado: AnalizadaMedia (5.5)—
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: sis: error si pixclock es igual a cero. El programa de espacio de usuario podría pasar cualquier valor al controlador a través de la interfaz ioctl(). Si el controlador no verifica el valor de pixclock, puede causar un error de división por cero. En sisfb_check_var(), var->pixclock se usa como divisor para calcular la velocidad antes de compararla con cero. Solucione este problema marcándolo al principio. Esto es similar a CVE-2022-3061 en i740fb que se solucionó mediante el commit 15cf0b8.
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: 0.25%
- Percentil entre todas las CVEs puntuadas: 16
- Fecha de la puntuación: 8/10/2026
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 (2)
CWE
- CWE-369
Referencias
- https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b
- https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207
- https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7e
- https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb
- https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313
- https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1
- https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239cb7ca52
- https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99
- https://git.kernel.org/stable/c/1d11dd3ea5d039c7da089f309f39c4cd363b924b
- https://git.kernel.org/stable/c/6db07619d173765bd8622d63809cbfe361f04207
- https://git.kernel.org/stable/c/84246c35ca34207114055a87552a1c4289c8fd7e
- https://git.kernel.org/stable/c/99f1abc34a6dde248d2219d64aa493c76bbdd9eb
- https://git.kernel.org/stable/c/cd36da760bd1f78c63c7078407baf01dd724f313
- https://git.kernel.org/stable/c/df6e2088c6f4cad539cf67cba2d6764461e798d1
- https://git.kernel.org/stable/c/e421946be7d9bf545147bea8419ef8239cb7ca52
- https://git.kernel.org/stable/c/f329523f6a65c3bbce913ad35473d83a319d5d99
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
JSON original (NVD)
Mostrar
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"value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: fbdev: sis: error si pixclock es igual a cero. El programa de espacio de usuario podría pasar cualquier valor al controlador a través de la interfaz ioctl(). Si el controlador no verifica el valor de pixclock, puede causar un error de división por cero. En sisfb_check_var(), var->pixclock se usa como divisor para calcular la velocidad antes de compararla con cero. Solucione este problema marcándolo al principio. Esto es similar a CVE-2022-3061 en i740fb que se solucionó mediante el commit 15cf0b8."
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