CVE-2026-5165

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

State: Published
Severity: 6.7 Medium
Published: Mar 30, 2026
Updated: Apr 28, 2026
Reserved: Mar 30, 2026

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.

Scores

CVSS	Score	Vector	Source
3.1	6.7 Medium	CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H	redhat

Weaknesses

CWE-825 Expired Pointer Dereference

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat Enterprise Linux 9Red Hat

References

https://access.redhat.com/security/cve/CVE-2026-5165vdb-entry
RHBZ#2453015issue-tracking
https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1493

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