CVE-2023-53171
Gravedad CVSS v3.1:
MEDIA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
15/09/2025
Última modificación:
02/12/2025
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
vfio/type1: prevent underflow of locked_vm via exec()<br />
<br />
When a vfio container is preserved across exec, the task does not change,<br />
but it gets a new mm with locked_vm=0, and loses the count from existing<br />
dma mappings. If the user later unmaps a dma mapping, locked_vm underflows<br />
to a large unsigned value, and a subsequent dma map request fails with<br />
ENOMEM in __account_locked_vm.<br />
<br />
To avoid underflow, grab and save the mm at the time a dma is mapped.<br />
Use that mm when adjusting locked_vm, rather than re-acquiring the saved<br />
task&#39;s mm, which may have changed. If the saved mm is dead, do nothing.<br />
<br />
locked_vm is incremented for existing mappings in a subsequent patch.
Impacto
Puntuación base 3.x
5.50
Gravedad 3.x
MEDIA
Productos y versiones vulnerables
| CPE | Desde | Hasta |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 3.6 (incluyendo) | 5.10.173 (excluyendo) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.11 (incluyendo) | 5.15.99 (excluyendo) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 5.16 (incluyendo) | 6.1.16 (excluyendo) |
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | 6.2 (incluyendo) | 6.2.3 (excluyendo) |
Para consultar la lista completa de nombres de CPE con productos y versiones, ver esta página
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/046eca5018f8a5dd1dc2cedf87fb5843b9ea3026
- https://git.kernel.org/stable/c/5a271242716846cc016736fb76be2b40ee49b0c3
- https://git.kernel.org/stable/c/a6b2aabe664098d5cf877ae0fd96459464a30e17
- https://git.kernel.org/stable/c/b0790dff0760b7734cf0961f497ad64628ca550b
- https://git.kernel.org/stable/c/eafb81c50da899dd80b340c841277acc4a1945b7



