CVE-2026-5165 — MEDIUM (6.7)

Vulnerability 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 Score

6.7

MEDIUM

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

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Redhat	Virtio-Win	-
Redhat	Enterprise Linux	9.0

Related Weaknesses (CWE)

CWE-825

References

https://access.redhat.com/security/cve/CVE-2026-5165Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2453015Issue TrackingVendor Advisory
https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1493Issue Tracking

FAQ

What is CVE-2026-5165?

CVE-2026-5165 is a vulnerability with a CVSS score of 6.7 (MEDIUM). 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. T...

How severe is CVE-2026-5165?

CVE-2026-5165 has been rated MEDIUM with a CVSS base score of 6.7/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-5165?

Check the references section above for vendor advisories and patch information. Affected products include: Redhat Virtio-Win, Redhat Enterprise Linux.