KVM: arm64: vgic: Avoid double-deactivate of IRQs in the nested context

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Summary

CVECVE-2026-80699
StatePUBLISHED
AssignerLinux
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-08-28 08:16:55 UTC
Updated2026-08-28 08:16:55 UTC
DescriptionIn the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic: Avoid double-deactivate of IRQs in the nested context In the nested state, the physical interrupt has already been deactivated through the HW bit in the LR. The extra deactivation would be harmless but can hit an errata case on AmpereOne, so avoid it here. On AmpereOne, deactivating a physical interrupt through ICC_DIR_EL1 or ICC_EOIR1_EL1 (depending on EOImode) which is not active, but is the highest priority pending interrupt causes the cpu to lose the interrupt pending state and also prevents the delivery of future interrupts.

Risk And Classification

EPSS: 0.001550000 probability, percentile 0.049960000 (date 2026-08-30)

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Linux Linux affected 6dd333c8942b2e5bb5927af843b56ec2857db7c7 f78f08b38a7f121c7d6b3e41002d9de7fd3c9189 git Not specified
CNA Linux Linux affected 6dd333c8942b2e5bb5927af843b56ec2857db7c7 8a570b19b4b16a8a3b5ffa2b332bd5613110b2d8 git Not specified
CNA Linux Linux affected 6.19 Not specified
CNA Linux Linux unaffected 6.19 semver Not specified
CNA Linux Linux unaffected 7.1.8 7.1.* semver Not specified
CNA Linux Linux unaffected 7.2 * original_commit_for_fix Not specified

References

ReferenceSourceLinkTags
git.kernel.org/stable/c/f78f08b38a7f121c7d6b3e41002d9de7fd3c9189 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
git.kernel.org/stable/c/8a570b19b4b16a8a3b5ffa2b332bd5613110b2d8 416baaa9-dc9f-4396-8d5f-8c081fb06d67 git.kernel.org
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