In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Don't leak PFN when kvm_translate_vncr() races MMU notifier In the… (CVE-2026-64282)
A vulnerability in the Linux kernel's KVM subsystem for arm64 was resolved. The issue involved a race condition in the function kvm_translate_vncr() with an MMU notifier, causing a failure to release a reference on a faulted-in page frame number (PFN). This could lead to leaking a PFN due to the missing call to kvm_release_faultin_page().
AI Analysis
Technical Summary
The vulnerability in the Linux kernel's KVM arm64 code arises when kvm_translate_vncr() races with an MMU notifier, resulting in an early return path that does not release the reference on the faulted-in PFN. The fix involves adding a call to kvm_release_faultin_page() to properly release the unused PFN and prevent leakage.
Potential Impact
The impact is limited to leaking a page frame number reference in the kernel's KVM arm64 virtualization code. There is no indication of code execution, privilege escalation, or denial of service. No known exploits are reported in the wild.
Mitigation Recommendations
A fix has been applied to the Linux kernel to address this issue by adding the missing release call. Users should update their Linux kernel to a version that includes this fix once available. Patch status is not explicitly confirmed; check the vendor advisory for current remediation guidance.
In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: Don't leak PFN when kvm_translate_vncr() races MMU notifier In the… (CVE-2026-64282)
Description
A vulnerability in the Linux kernel's KVM subsystem for arm64 was resolved. The issue involved a race condition in the function kvm_translate_vncr() with an MMU notifier, causing a failure to release a reference on a faulted-in page frame number (PFN). This could lead to leaking a PFN due to the missing call to kvm_release_faultin_page().
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in the Linux kernel's KVM arm64 code arises when kvm_translate_vncr() races with an MMU notifier, resulting in an early return path that does not release the reference on the faulted-in PFN. The fix involves adding a call to kvm_release_faultin_page() to properly release the unused PFN and prevent leakage.
Potential Impact
The impact is limited to leaking a page frame number reference in the kernel's KVM arm64 virtualization code. There is no indication of code execution, privilege escalation, or denial of service. No known exploits are reported in the wild.
Mitigation Recommendations
A fix has been applied to the Linux kernel to address this issue by adding the missing release call. Users should update their Linux kernel to a version that includes this fix once available. Patch status is not explicitly confirmed; check the vendor advisory for current remediation guidance.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-rvp6-qppr-rmf4
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-64282"]
- Ecosystems
- []
- Database Specific Severity
- null
- Cvss Version
- null
Threat ID: 6a65420e9c2644c7f80862fd
Added to database: 07/25/2026, 23:09:02 UTC
Last enriched: 07/25/2026, 23:38:39 UTC
Last updated: 07/26/2026, 05:30:48 UTC
Views: 5
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