CVE-2024-27395
Estado: ModificadaAlta (7.8)—
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: net: openvswitch: Fix Use-After-Free en ovs_ct_exit Dado que kfree_rcu, que se llama en el recorrido hlist_for_each_entry_rcu de ovs_ct_limit_exit, no forma parte de la sección crítica de lectura de RCU, es posible que el período de gracia de RCU pasará durante el recorrido y la clave quedará libre. Para evitar esto, se debe cambiar a hlist_for_each_entry_safe.
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: 0.24%
- Percentil entre todas las CVEs puntuadas: 14
- 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-416
Referencias
- https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994
- https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3
- https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424
- https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2
- https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4
- https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1
- https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137
- https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865
- https://git.kernel.org/stable/c/2db9a8c0a01fa1c762c1e61a13c212c492752994
- https://git.kernel.org/stable/c/35880c3fa6f8fe281a19975d2992644588ca33d3
- https://git.kernel.org/stable/c/589523cf0b384164e445dd5db8d5b1bf97982424
- https://git.kernel.org/stable/c/5ea7b72d4fac2fdbc0425cd8f2ea33abe95235b2
- https://git.kernel.org/stable/c/9048616553c65e750d43846f225843ed745ec0d4
- https://git.kernel.org/stable/c/bca6fa2d9a9f560e6b89fd5190b05cc2f5d422c1
- https://git.kernel.org/stable/c/eaa5e164a2110d2fb9e16c8a29e4501882235137
- https://git.kernel.org/stable/c/edee0758747d7c219e29db9ed1d4eb33e8d32865
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-613116.html
JSON original (NVD)
Mostrar
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"value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: openvswitch: Fix Use-After-Free in ovs_ct_exit\n\nSince kfree_rcu, which is called in the hlist_for_each_entry_rcu traversal\nof ovs_ct_limit_exit, is not part of the RCU read critical section, it\nis possible that the RCU grace period will pass during the traversal and\nthe key will be free.\n\nTo prevent this, it should be changed to hlist_for_each_entry_safe."
},
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