CVE-2026-5164

A flaw was found in virtio-win. The `RhelDoUnMap()` function does not properly validate the number of descriptors provided by a user during an unmap request. A local user could exploit this input validation vulnerability by supplying an excessive number of descriptors, leading to a buffer overrun. This can cause a system crash, resulting in a Denial of Service (DoS).

CVSS v3 6.7 MEDIUM

6.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 0.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://access.redhat.com/security/cve/CVE-2026-5164	Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2453014	Issue Tracking Vendor Advisory
https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1504	Issue Tracking Patch

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:redhat:virtio-win:-:::::::*
	cpe:2.3:o:redhat:enterprise_linux:9.0:::::::*
	cpe:2.3:o:redhat:enterprise_linux:10.0:::::::*

History

No history.

Information

Published : 2026-03-30 15:16

Updated : 2026-06-17 10:58

NVD link : CVE-2026-5164

Mitre link : CVE-2026-5164

CVE.ORG link : CVE-2026-5164

JSON object : View

Products Affected

redhat

enterprise_linux
virtio-win

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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