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&#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.



