CVE-2026-5165: Virtio-win: virtio-win: memory corruption via use-after-free in virtio blk device reset

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.

CVSS vector

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

Attack vector

Local

Complexity

Low

Privileges

Low

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.1% · higher than 1% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

RH

Red Hat Enterprise Linux 10 · Red Hat

All versions, or not specified · source: vendor

RH

Red Hat Enterprise Linux 9 · Red Hat

All versions, or not specified · source: vendor

EL

Enterprise Linux · Redhat

9.0; 10.0 · source: NVD

VI

Virtio-win · Redhat

All versions, or not specified · source: NVD