CVE-2026-80873KVM: arm64: nv: Write ESR_EL2 for injected nested SError exceptions
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Sep 4, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 77ee70a073575977b403e9add25f185d614217d8 builds before 09f35145f3a4aacea4d9b914ad895bf5af8fc4ae; from 77ee70a073575977b403e9add25f185d614217d8 before 29227821e2320ff6a174c91742b4ce221fe8d563; from 77ee70a073575977b403e9add25f185d614217d8 before e2cb1f4578625e71f461d5c1ce70984193389cbb | CNA record |
References
- https://git.kernel.org/stable/c/09f35145f3a4aacea4d9b914ad895bf5af8fc4ae
- https://git.kernel.org/stable/c/29227821e2320ff6a174c91742b4ce221fe8d563
- https://git.kernel.org/stable/c/e2cb1f4578625e71f461d5c1ce70984193389cbb
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.