What’s Vulnerable › Vulnerabilities

CVE-2026-64282: KVM: arm64: Don't leak PFN when kvm_translate_vncr() races MMU notifier

• Severity: medium (CVSS 4.7 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-25 · updated 2026-08-17
• Weakness: CWE-362

Description

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 case that kvm_translate_vncr() races with an MMU notifier the early return does not release a reference on the faulted in PFN. Add the necessary call to kvm_release_faultin_page() for the unused PFN.

Affected products

• Linux kernel: from 6.16 before 6.18.39; from 6.19 before 7.1.4 — fixed in 6.18.39, 7.1.4

How to fix

Upgrade to a fixed version: Linux kernel 6.18.39, 7.1.4. Check the vendor advisory for mitigations.

References

• https://git.kernel.org/stable/c/0c93681aea0a1b8be14730a88abe77c840272e41
• https://git.kernel.org/stable/c/9f76b039a72d7e06374aa96862f0232ed53f7787
• https://git.kernel.org/stable/c/cd1067ccc0dbc18890a74db116d00a4bc3c7f2f7

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