Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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-&gt;num_eventid_bits.<br /> <br /> Reject restored DTEs with num_eventid_bits &gt; 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.