CVE-2022-2196
Estado: ModificadaAlta (8.8)—
Existe una regresión en el kernel de Linux dentro de KVM: nVMX que permitió ataques de ejecución especulativa. L2 puede llevar a cabo ataques Spectre v2 en L1 debido a que L1 piensa que no necesita retpolines o IBPB después de ejecutar L2 debido a que KVM (L0) anuncia soporte eIBRS en L1. Un atacante en L2 con ejecución de código puede ejecutar código en una rama indirecta en la máquina host. Recomendamos actualizar al Kernel 6.2 o al commit anterior 2e7eab81425a
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.29%
- Percentil entre todas las CVEs puntuadas: 20
- Fecha de la puntuación: 9/10/2026
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-1188
- CWE-1188
Referencias
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1b0cafaae8884726c597caded50af185ffc13349
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=63fada296062e91ad9f871970d4e7f19e21a6a15
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=6b539a7dbb49250f92515c2ba60aea239efc9e35
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=f93a1a5bdcdd122aae0a3eab7a52c15b71fb725b
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e7eab81425ad6c875f2ed47c0ce01e78afc38a5
- https://kernel.dance/#2e7eab81425a
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=2e7eab81425ad6c875f2ed47c0ce01e78afc38a5
- https://kernel.dance/#2e7eab81425a
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://security.netapp.com/advisory/ntap-20230223-0002/
JSON original (NVD)
Mostrar
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"value": "Existe una regresión en el kernel de Linux dentro de KVM: nVMX que permitió ataques de ejecución especulativa. L2 puede llevar a cabo ataques Spectre v2 en L1 debido a que L1 piensa que no necesita retpolines o IBPB después de ejecutar L2 debido a que KVM (L0) anuncia soporte eIBRS en L1. Un atacante en L2 con ejecución de código puede ejecutar código en una rama indirecta en la máquina host. Recomendamos actualizar al Kernel 6.2 o al commit anterior 2e7eab81425a"
}
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"lastModified": "2026-08-07T19:17:31.747",
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