Riskcovery

CVE-2026-80873

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

State
Published
Severity
Not scored
Published
Sep 4, 2026
Updated
Sep 4, 2026
Reserved
Aug 26, 2026

Read the record on cve.org

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.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

ProductVersions
LinuxLinux
  • 77ee70a073575977b403e9add25f185d614217d8 to before 09f35145f3a4aacea4d9b914ad895bf5af8fc4aeAffected
  • 77ee70a073575977b403e9add25f185d614217d8 to before 29227821e2320ff6a174c91742b4ce221fe8d563Affected
  • 77ee70a073575977b403e9add25f185d614217d8 to before e2cb1f4578625e71f461d5c1ce70984193389cbbAffected
LinuxLinux
  • 6.17Affected
  • before 6.17Not affected
  • 6.18.40 through 6.18.*Not affected
  • 7.1.5 through 7.1.*Not affected
  • 7.2 and laterNot affected

References

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