CVE-2026-80699

Summary

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.

Affected Software

VendorProductVersion RangeStatus
LinuxLinux6dd333c8942b2e5bb5927af843b56ec2857db7c7 < f78f08b38a7f121c7d6b3e41002d9de7fd3c9189affected
LinuxLinux6dd333c8942b2e5bb5927af843b56ec2857db7c7 < 8a570b19b4b16a8a3b5ffa2b332bd5613110b2d8affected
LinuxLinux6.19affected
LinuxLinux0 < 6.19unaffected
LinuxLinux7.1.8 <= 7.1.*unaffected
LinuxLinux7.2 <= *unaffected

Weaknesses

References