{"id":"CVE-2026-5165","title":"Virtio-win: virtio-win: memory corruption via use-after-free in virtio blk device reset","summary":"A flaw was found in virtio-win, specifically within the VirtIO Block (BLK) device. When the device undergoes a reset, it fails to properly manage memory, resulting in a use-after-free vulnerability. This issue could allow a local attacke…","severity":"medium","cvss":6.7,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H","cvssSource":"cna","cwe":["CWE-825"],"vendor":"Red Hat","product":"virtio-win","affected":["virtio-win (all versions)","virtio-win","virtio-win (all versions)"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-03-30T18:05:27.370746Z"},"published":"2026-03-30","updated":"2026-11-05","sourceUpdated":"2026-11-05T21:17:53.958Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-5165","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-5165"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2453015","label":"RHBZ#2453015"},{"url":"https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1493"}],"tags":["cve.org"],"epss":0.00111,"epssPercentile":0.01315,"ingestedAt":"2026-11-05T22:38:32.038Z","slug":"CVE-2026-5165","body":"## Overview\n\nA flaw was found in virtio-win, specifically within the VirtIO Block (BLK) device. When the device undergoes a reset, it fails to properly manage memory, resulting in a use-after-free vulnerability. This issue could allow a local attacker to corrupt system memory, potentially leading to system instability or unexpected behavior.\n\n## Affected\n\n- `virtio-win (all versions)`\n- `virtio-win`\n- `virtio-win (all versions)`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n### Workarounds\n\nMitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.","depth":"sunlit","depthScore":37,"depthScoreParts":{"impact":36.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}