CVE-2024-27437
Estado: ModificadaMedia (5.5)—
En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: vfio/pci: deshabilita la habilitación automática de INTx IRQ exclusivo. Actualmente, para dispositivos que requieren enmascaramiento en el irqchip para INTx, es decir. En dispositivos sin soporte DisINTx, la IRQ se habilita en request_irq() y posteriormente se deshabilita según sea necesario para alinearse con el indicador de estado enmascarado. Esto presenta una ventana donde la interrupción podría dispararse entre estos eventos, lo que hace que la IRQ incremente la profundidad de desactivación dos veces.
Leer descripción completaMostrar menos
Esto sería irrecuperable para un usuario ya que el indicador enmascarado impide las habilitaciones anidadas a través de vfio. En su lugar, invierta la lógica usando IRQF_NO_AUTOEN de modo que INTx exclusivo nunca se habilite automáticamente, luego desenmascare según sea necesario.
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: 0.24%
- 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
- NVD-CWE-noinfo
Referencias
- https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060
- https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351
- https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2
- https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda
- https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5
- https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438
- https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec
- https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43
- https://git.kernel.org/stable/c/139dfcc4d723ab13469881200c7d80f49d776060
- https://git.kernel.org/stable/c/26389925d6c2126fb777821a0a983adca7ee6351
- https://git.kernel.org/stable/c/2a4a666c45107206605b7b5bc20545f8aabc4fa2
- https://git.kernel.org/stable/c/3b3491ad0f80d913e7d255941d4470f4a4d9bfda
- https://git.kernel.org/stable/c/561d5e1998d58b54ce2bbbb3e843b669aa0b3db5
- https://git.kernel.org/stable/c/b7a2f0955ffceffadfe098b40b50307431f45438
- https://git.kernel.org/stable/c/bf0bc84a20e6109ab07d5dc072067bd01eb931ec
- https://git.kernel.org/stable/c/fe9a7082684eb059b925c535682e68c34d487d43
- https://lists.debian.org/debian-lts-announce/2024/06/msg00017.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
JSON original (NVD)
Mostrar
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}
],
"lastModified": "2026-06-17T07:19:53.830",
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