Qemu-kvm: heap off-by-one in kvm xen physdevop_map_pirq_CVE-2026-0665

6.5 / 10

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

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.

Basic Information

ID CVE-2026-0665

Source fedora

Published Feb 18, 2026 at 20:50

Modified Feb 18, 2026 at 21:27

Affected Product

Version 8.0.0

Affected Versions 8.0.0

CWE Classification

CWE-787

References

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    "published": "2026-02-18T20:50:03.724Z",
    "modified": "2026-02-18T21:27:14.216Z",
    "type": "cve",
    "title": "Qemu-kvm: heap off-by-one in kvm xen physdevop_map_pirq",
    "source": "fedora",
    "references": "https://access.redhat.com/security/cve/CVE-2026-0665\nhttps://bugzilla.redhat.com/show_bug.cgi?id=2428640",
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