CVE-2026-0665

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.

References

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-7934

https://bugzilla.redhat.com/show_bug.cgi?id=2428640

https://access.redhat.com/security/cve/CVE-2026-0665

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS