CVE-2026-80873

Not scored yetLast modified Sep 4, 2026

Description

In the Linux kernel, the following vulnerability has been resolved:

KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions

kvm_inject_el2_exception() writes ESR_EL2 for synchronous exceptions but not for SError. enter_exception64() does not write ESR_ELx for any exception type, so the constructed syndrome is dropped. A guest L2 hypervisor taking a nested SError observes stale ESR_EL2.

This affects both kvm_inject_nested_serror() and the EASE path in kvm_inject_nested_sea().

Write ESR_EL2 for except_type_serror, matching except_type_sync.

Metrics

No CVSS score has been published yet.

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

No affected versions have been published.

Timeline

Published
Sep 4, 2026
Last modified
Sep 4, 2026
NVD status
Received

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CVE-2026-80873: Unscored | Vulnix