CVE-2026-64106
Gravedad CVSS v3.1:
CRÍTICA
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
19/07/2026
Última modificación:
20/07/2026
Descripción
*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br />
<br />
KVM: arm64: vgic-its: Reject restored DTE with out-of-range num_eventid_bits<br />
<br />
Userspace can restore an ITS Device Table Entry whose Size field encodes<br />
more EventID bits than the virtual ITS supports. The live MAPD path<br />
rejects that state, but vgic_its_restore_dte() accepts it and stores the<br />
out-of-range value in dev->num_eventid_bits.<br />
<br />
Reject restored DTEs with num_eventid_bits > VITS_TYPER_IDBITS before<br />
allocating the device. This mirrors the MAPD check and prevents the<br />
restored state from reaching vgic_its_restore_itt(), where the unchecked<br />
value can be converted into an oversized scan_its_table() range.
Impacto
Puntuación base 3.x
9.00
Gravedad 3.x
CRÍTICA
Referencias a soluciones, herramientas e información
- https://git.kernel.org/stable/c/0680f511926589206f81f57f76ce131d7741a316
- https://git.kernel.org/stable/c/1716b7fea2ead941a0dfac06c4504a3437cdf00d
- https://git.kernel.org/stable/c/8bcd15b690a390241179516af1b6ae49ebfd9d95
- https://git.kernel.org/stable/c/9ce754ed8e7ab4e3999767ce1505f85c449ccb07
- https://git.kernel.org/stable/c/b94538186a3eae3763b8f96dacd610920a865aa7
- https://git.kernel.org/stable/c/dab9f93251b2c86a033de6098d0c73afddd55d4a



