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CVE-2026-0665

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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.

CVSS 6.5 · Medium · EPSS 0.2% · Fix available

Published
Updated

Stack: system

Affected products and versions

  • red hat enterprise linux 10

    No fix published

  • red hat enterprise linux 6

    No fix published

  • red hat enterprise linux 7

    No fix published

  • red hat enterprise linux 8

    No fix published

  • red hat enterprise linux 9

    No fix published

  • red hat openshift container platform 4

    No fix published

  • qemu Debian:13

    Versions
    • 1:10.0.2+ds-2
    • 1:10.0.2+ds-2+deb13u1
    • 1:10.0.2+ds-2+deb13u1~bpo12+1
    • 1:10.0.3+ds-0+deb13u1
    • 1:10.0.3+ds-1
    • 1:10.0.3+ds-2
    • 1:10.0.3+ds-3
    • 1:10.0.3+ds-4
    • 1:10.0.6+ds-0+deb13u1
    • 1:10.0.6+ds-0+deb13u2
    • 1:10.0.7+ds-0+deb13u1
    Affected ranges
    • ECOSYSTEM: < 1:10.0.8+ds-0+deb13u1

    Update to 1:10.0.8+ds-0+deb13u1

  • qemu Debian:14

    Versions
    • 1:10.0.2+ds-2
    • 1:10.0.3+ds-1
    • 1:10.0.3+ds-2
    • 1:10.0.3+ds-3
    • 1:10.0.3+ds-4
    • 1:10.1.0+ds-1
    • 1:10.1.0+ds-2
    • 1:10.1.0+ds-3
    • 1:10.1.0+ds-4
    • 1:10.1.0+ds-5
    • 1:10.1.0~rc0+ds-1
    • 1:10.1.0~rc0+ds-2
    • 1:10.1.0~rc0+ds-3
    • 1:10.1.0~rc0+ds-4
    • 1:10.1.0~rc1+ds-1
    • 1:10.1.0~rc1+ds-1a
    • 1:10.1.0~rc1+ds-1b
    • 1:10.1.0~rc1+ds-2
    • 1:10.1.0~rc1+ds-3
    • 1:10.1.0~rc2+ds-1
    • 1:10.1.0~rc3+ds-1
    • 1:10.1.0~rc3+ds-2
    • 1:10.1.1+ds-1
    • 1:10.1.2+ds-1
    • 1:10.1.2+ds-2
    • 1:10.1.2+ds-3
    • 1:10.1.3+ds-1
    • 1:10.2.0+ds-1
    • 1:10.2.0~rc1+ds-1
    Affected ranges
    • ECOSYSTEM: < 1:10.2.0+ds-2

    Update to 1:10.2.0+ds-2

  • qemu Ubuntu:24.04:LTS

    Versions
    • 1:8.0.4+dfsg-1ubuntu3
    • 1:8.0.4+dfsg-1ubuntu4
    • 1:8.0.4+dfsg-1ubuntu5
    • 1:8.1.3+ds-1ubuntu2
    • 1:8.2.1+ds-1ubuntu1
    • 1:8.2.1+ds-1ubuntu8
    • 1:8.2.1+ds-1ubuntu9
    • 1:8.2.2+ds-0ubuntu1
    • 1:8.2.2+ds-0ubuntu1.2
    • 1:8.2.2+ds-0ubuntu1.4
    • 1:8.2.2+ds-0ubuntu1.5
    • 1:8.2.2+ds-0ubuntu1.6
    • 1:8.2.2+ds-0ubuntu1.7
    • 1:8.2.2+ds-0ubuntu1.8
    • 1:8.2.2+ds-0ubuntu1.9
    • 1:8.2.2+ds-0ubuntu1.10
    • 1:8.2.2+ds-0ubuntu1.11
    • 1:8.2.2+ds-0ubuntu1.12
    Affected ranges
    • ECOSYSTEM: < 1:8.2.2+ds-0ubuntu1.13

    Update to 1:8.2.2+ds-0ubuntu1.13

  • qemu Ubuntu:25.10

    Versions
    • 1:9.2.1+ds-1ubuntu5
    • 1:10.0.2+ds-1ubuntu1
    • 1:10.0.2+ds-1ubuntu2
    • 1:10.1.0+ds-1ubuntu1
    • 1:10.1.0+ds-5ubuntu1
    • 1:10.1.0+ds-5ubuntu2
    • 1:10.1.0+ds-5ubuntu2.1
    • 1:10.1.0+ds-5ubuntu2.2
    Affected ranges
    • ECOSYSTEM: < 1:10.1.0+ds-5ubuntu2.4

    Update to 1:10.1.0+ds-5ubuntu2.4

Original sources

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