{"id":"CVE-2026-0665","summary":"Qemu-kvm: heap off-by-one in kvm xen physdevop_map_pirq","details":"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.","modified":"2026-05-18T05:59:42.171007607Z","published":"2026-02-18T20:50:03.724Z","related":["SUSE-SU-2026:0445-1","SUSE-SU-2026:0662-1","SUSE-SU-2026:20666-1","SUSE-SU-2026:20693-1","SUSE-SU-2026:20716-1","openSUSE-SU-2026:10097-1","openSUSE-SU-2026:20357-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0665.json","cwe_ids":["CWE-787"],"cna_assigner":"fedora"},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-0665"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/0xxx/CVE-2026-0665.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0665"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2428640"},{"type":"PACKAGE","url":"https://gitlab.com/qemu-project/qemu"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://gitlab.com/qemu-project/qemu","events":[{"introduced":"c1eb2ddf0f8075faddc5f7c3d39feae3e8e9d6b4"},{"last_affected":"698104725efad4b29079d857dfdebbd804e34c99"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"8.0.0"},{"last_affected":"10.2.0"}]}}],"versions":["v10.2.0","v10.2.0-rc4","v10.2.0-rc3","v10.2.0-rc2","v10.2.0-rc1","v10.1.0","v10.1.0-rc4","v10.1.0-rc3","v10.1.0-rc2","v10.1.0-rc1","v10.1.0-rc0","v10.0.0","v10.0.0-rc4","v10.0.0-rc3","v10.0.0-rc2","v10.0.0-rc1","v10.0.0-rc0","v9.2.0","v9.2.0-rc3","v9.2.0-rc0","v9.2.0-rc2","v9.2.0-rc1","v9.1.0","v9.1.0-rc4","v9.1.0-rc3","v9.1.0-rc2","v9.1.0-rc1","v9.1.0-rc0","v9.0.0","v9.0.0-rc4","v9.0.0-rc3","v9.0.0-rc2","v9.0.0-rc1","v9.0.0-rc0","v8.2.0","v8.2.0-rc4","v8.2.0-rc3","v8.2.0-rc2","v8.2.0-rc1","v8.2.0-rc0","v8.1.0","v8.1.0-rc4","v8.1.0-rc3","v8.1.0-rc2","v8.1.0-rc1","v8.1.0-rc0","v8.0.0"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-0665.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"}]}