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

CVE-2026-64288

Gravedad:
Pendiente de análisis
Tipo:
No Disponible / Otro tipo
Fecha de publicación:
25/07/2026
Última modificación:
30/07/2026

Descripción

*** Pendiente de traducción *** In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> KVM: arm64: nv: Avoid dereferencing NULL VNCR pseudo-TLB<br /> <br /> VNCR TLB invalidation occurs from MMU notifiers or TLBI instructions,<br /> and either can race against a vcpu not being onlined yet (no pseudo-TLB<br /> allocated). Similarly, the TLB might be invalid, and the invalidation<br /> should be skipped in this case.<br /> <br /> Both kvm_invalidate_vncr_ipa() and kvm_invalidate_vncr_va() are<br /> expected to perform the same checks, except that the latter doesn&amp;#39;t<br /> check for the allocation and blindly dereferences the pointer.<br /> <br /> Solve this by introducing a new iterator built on top of the usual<br /> kvm_for_each_vcpu() that checks for both of the above conditions,<br /> and convert the two users to it.

Impacto