CVE-2026-80665
Received Received - Intake

KVM: arm64 NV SEA Injection on Translation Failure

Publication date: 2026-08-28

Last updated on: 2026-08-28

Assigner: kernel.org

Description
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Inject SEA if kvm_translate_vncr() can't resolve PFN kvm_handle_vncr_abort() assumes that s1_walk_result conveys an abort when kvm_translate_vncr() returns -EFAULT. This is not always the case as it's possible to encounter 'late' failures on the output of S1 translation, e.g. a GFN outside of the memslots. Fix it by preparing an external abort before returning from kvm_translate_vncr(). Get rid of the BUG_ON() in the fault injection path while at it.

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Meta Information

Published
2026-08-28
Last Modified
2026-08-28
Generated
2026-08-28
AI Q&A
2026-08-28
EPSS Evaluated
N/A
NVD
CVE-2026-80665
EUVD
EUVD-2026-67541

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
linux linux_kernel *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-UNKNOWN

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Executive Summary

This is a Linux kernel vulnerability in KVM for arm64 systems. It involves improper handling of page faults during virtual machine memory translation. When resolving a physical frame number fails, the system may incorrectly assume it's an abort condition when it could be a late failure, potentially leading to unhandled errors.

Impact Analysis

This vulnerability could allow a guest virtual machine to cause a denial of service on the host system by triggering unhandled page faults. It may lead to system crashes or instability in virtualized environments using KVM on arm64.

Mitigation Strategies

Update the Linux kernel to the latest patched version to resolve this KVM arm64 vulnerability. Monitor vendor advisories for kernel updates specific to your distribution.

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