Description
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 attacker to corrupt system memory, potentially leading to system instability or unexpected behavior.
Affected products
redhat: virtio-win; redhat: enterprise linux
References3
- access.redhat.com/security/cve/CVE-2026-5165 Vendor Advisory
- bugzilla.redhat.com/show_bug.cgi?id=2453015 Issue TrackingVendor Advisory
- github.com/virtio-win/kvm-guest-drivers-windows/pull/1493 Issue Tracking
Metrics
- CVSS 3.1
-
7.8
HIGH
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 1 · as of 12 November 2026
- CWE
- CWE-825
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.