CVE-2026-64288: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: nv: Avoid dereferencing NULL VNCR pseudo-TLB VNCR TLB invalidation occurs from MMU notifiers or TLBI instructions, and either can race against a vcpu not being onlined yet (no pseudo-TLB allocated). Similarly, the TLB might be invalid, and the invalidation should be skipped in this case. Both kvm_invalidate_vncr_ipa() and kvm_invalidate_vncr_va() are expected to perform the same checks, except that the latter doesn't check for the allocation and blindly dereferences the pointer. Solve this by introducing a new iterator built on top of the usual kvm_for_each_vcpu() that checks for both of the above conditions, and convert the two users to it.

Засегнати продукти

• Linux Linux: 4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929 преди 7c73a269a880b1399baacfb9d521415e6ef7ecc2; 4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929 преди 5fd30133af864a1de0a0bd87d3fe3cf23205fbc7; 4ffa72ad8f37e73bbb6c0baa88557bcb4fd39929 преди 4be6cbeb93d26994bd1827ddbce391e3c4395c8f
• Linux Linux: 6.16; преди 6.16; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; от 7.2 нататък

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-64288
• https://nvd.nist.gov/vuln/detail/CVE-2026-64288
• https://git.kernel.org/stable/c/7c73a269a880b1399baacfb9d521415e6ef7ecc2
• https://git.kernel.org/stable/c/5fd30133af864a1de0a0bd87d3fe3cf23205fbc7
• https://git.kernel.org/stable/c/4be6cbeb93d26994bd1827ddbce391e3c4395c8f