CVE-2024-27414
Estado: ModificadaMedia (5.5)—
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: rtnetlink: corrige la lógica de error de la reescritura de IFLA_BRIDGE_FLAGS En el commit d73ef2d69c0d ("rtnetlink: let rtnl_bridge_setlink comprueba la longitud de IFLA_BRIDGE_MODE"), se realizó un ajuste a la lógica de bucle anterior en la función ` rtnl_bridge_setlink` para permitir que el bucle también verifique la longitud del atributo IFLA_BRIDGE_MODE.
Leer descripción completaMostrar menos
Sin embargo, este ajuste eliminó la declaración "break" y generó una lógica de error en la escritura de los indicadores al final de esta función. if (have_flags) memcpy(nla_data(attr), &flags, sizeof(flags)); // attr debería apuntar a IFLA_BRIDGE_FLAGS NLA !!! Antes de la confirmación mencionada, se concede que el `attr` sea IFLA_BRIDGE_FLAGS. Sin embargo, esto no es necesariamente cierto ahora, ya que el bucle actualizado permitirá que el atributo apunte al último NLA, incluso un NLA no válido que podría causar escrituras desbordadas. Este parche introduce una nueva variable `br_flag` para guardar el puntero NLA que apunta a IFLA_BRIDGE_FLAGS y lo usa para resolver la lógica de error mencionada.
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: 0.23%
- Percentil entre todas las CVEs puntuadas: 13
- 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
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/167d8642daa6a44b51de17f8ff0f584e1e762db7
- https://git.kernel.org/stable/c/743ad091fb46e622f1b690385bb15e3cd3daf874
- https://git.kernel.org/stable/c/831bc2728fb48a8957a824cba8c264b30dca1425
- https://git.kernel.org/stable/c/882a51a10ecf24ce135d573afa0872aef02c5125
- https://git.kernel.org/stable/c/a1227b27fcccc99dc44f912b479e01a17e2d7d31
- https://git.kernel.org/stable/c/b9fbc44159dfc3e9a7073032752d9e03f5194a6f
- https://git.kernel.org/stable/c/f2261eb994aa5757c1da046b78e3229a3ece0ad9
- https://git.kernel.org/stable/c/167d8642daa6a44b51de17f8ff0f584e1e762db7
- https://git.kernel.org/stable/c/743ad091fb46e622f1b690385bb15e3cd3daf874
- https://git.kernel.org/stable/c/831bc2728fb48a8957a824cba8c264b30dca1425
- https://git.kernel.org/stable/c/882a51a10ecf24ce135d573afa0872aef02c5125
- https://git.kernel.org/stable/c/a1227b27fcccc99dc44f912b479e01a17e2d7d31
- https://git.kernel.org/stable/c/b9fbc44159dfc3e9a7073032752d9e03f5194a6f
- https://git.kernel.org/stable/c/f2261eb994aa5757c1da046b78e3229a3ece0ad9
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
JSON original (NVD)
Mostrar
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