KVM: arm64: vgic: Avoid double-deactivate of IRQs in the nested context (CVE-2026-80699) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-80699

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

Answer in brief

CVE-2026-80699 records a Unknown severity vulnerability in KVM: arm64: vgic: Avoid double-deactivate of IRQs in the nested context. The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 28, 2026Updated Aug 28, 2026Source checked Aug 28, 2026First seen by HOL Aug 28, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux (generic), Linux/Linux (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Linux/Linuxgeneric	>=6dd333c8942b2e5bb5927af843b56ec2857db7c7 <f78f08b38a7f121c7d6b3e41002d9de7fd3c9189 \|\| >=6dd333c8942b2e5bb5927af843b56ec2857db7c7 <8a570b19b4b16a8a3b5ffa2b332bd5613110b2d8	f78f08b38a7f121c7d6b3e41002d9de7fd3c9189, 8a570b19b4b16a8a3b5ffa2b332bd5613110b2d8
Linux/Linuxgeneric	6.19	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Linux/Linux, Linux/Linux.
Review the reported fix. Update Linux/Linux to f78f08b38a7f121c7d6b3e41002d9de7fd3c9189 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 28, 2026

Sources and claim methodology

Upstream source description

In 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.

Quoted source text, attributed separately from HOL analysis.