CVE-2026-0665 – Qemu-kvm: heap off-by-one in kvm xen physdevop_map_pirq

CVE ID : CVE-2026-0665

Published : Feb. 18, 2026, 8:50 p.m. | 10 minutes ago

Description : An off-by-one error was found in QEMU’s KVM Xen guest support. A malicious guest could use this flaw to trigger out-of-bounds heap accesses in the QEMU process via the emulated Xen physdev hypercall interface, leading to a denial of service or potential memory corruption.

Severity: 6.5 | MEDIUM

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