CVE-2026-80873

linux: In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Write ESR_EL2 for injected neste...

CVE-2026-80873 is fixed in 20 products on 1 platform, first by ALAS2023-2026-2071, released August 31, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
n/a
important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0021
10th percentile

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.

Where it's fixed

ProductFixed inFixReleased
Linux
bpftool6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
bpftool6.18-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel-livepatch-6.18.41-94.142 · amzn 2023 1:1.0-0.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-debuginfo-common-aarch64 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-debuginfo-common-x86_64 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-devel · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-headers · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-modules-extra · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-modules-extra-common · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-tools · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-tools-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
kernel6.18-tools-devel · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
linux · Debian 14 7.1.5-1 DEBIAN-CVE-2026-80873 Sep 5, 2026
microvm-kernel6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
perf6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
perf6.18-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
python3-perf6.18 · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026
python3-perf6.18-debuginfo · amzn 2023 1:6.18.41-94.142.amzn2023 ALAS2023-2026-2071 Aug 31, 2026

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