CVE-2026-5164 in virtio-win kvm-guest-drivers-windowsinfo

Summary

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).

Responsible

redhat

Reservation

03/30/2026

Disclosure

03/30/2026

Entries

VulDB provides additional information and datapoints for this CVE:

ID	Vulnerability	CWE	Exp	Cou	CVE
354198	virtio-win kvm-guest-drivers-windows RhelDoUnMap buffer overflow	120	Not defined	Official fix	CVE-2026-5164

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