CVE-2026-46317 | Linux Kernel up to 6.18.34/7.0.11/7.1-rc6 KVM kvm_unmap_gfn_range nested_mmus[] buffer overflow (WID-SEC-2026-1870)

A vulnerability categorized as . Affected by this issue is the function kvm_unmap_gfn_range of the component KVM. Such manipulation of the argument nested_mmus[] leads to buffer overflow.

This vulnerability is traded as CVE-2026-46317. Access to the local network is required for this attack to succeed. There is no exploit available.

It is advisable to upgrade the affected component.