CVE-2026-5164

medium

Description

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).

References

https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1504

https://bugzilla.redhat.com/show_bug.cgi?id=2453014

https://access.redhat.com/security/cve/CVE-2026-5164

Details

Source: Mitre, NVD

Published: 2026-03-30

Updated: 2026-03-30

Risk Information

CVSS v2

Base Score: 6.5

Vector: CVSS2#AV:L/AC:L/Au:M/C:C/I:C/A:C

Severity: Medium

CVSS v3

Base Score: 6.7

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

Severity: Medium

EPSS

EPSS: 0.0001