CVE-2026-64282 KVM: arm64: Don't leak PFN when kvm_translate_vncr() races MMU notifier
A race condition in Linux kernel KVM arm64 can leak PFN references, potentially leading to resource exhaustion and denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-64282?
CVE-2026-64282 is a medium-severity vulnerability in Linux kernel, published on 25 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-362
Which versions are affected by CVE-2026-64282?
It affects 1 product.
Products include Linux kernel.
How do I fix CVE-2026-64282?
Apply the vendor's patch.
Is CVE-2026-64282 being exploited?
There is no known exploitation of CVE-2026-64282 in the wild and no public exploit code.
Other vulnerabilities in Linux kernel
Sources
Also known as BELL-CVE-2026-64282, DEBIAN-CVE-2026-64282, GHSA-rvp6-qppr-rmf4, ROOT-OS-UBUNTU-2204-CVE-2026-64282, UBUNTU-CVE-2026-64282.