PT-2026-29035 · Unknown · Virtio-Win

Kevin Wolf + 1 · Published 2026-03-30 · Updated 2026-04-28 · CVE-2026-5164

Positive Technologies (AI Summary)

CVSS v3.1

6.7

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions virtio-win (affected versions not specified)

Description A flaw exists in virtio-win where the RhelDoUnMap() function inadequately validates the number of descriptors supplied by a user during an unmap request. A local user could exploit this input validation issue by providing an excessive number of descriptors, potentially causing a buffer overrun. This could lead to a system crash and a Denial of Service (DoS).

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2026-5164

Affected Products

Virtio-Win

References · 8

• https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1504 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-5164 · Security Note
• https://bugzilla.redhat.com/show_bug.cgi?id=2453014 · Vendor Advisory
• https://access.redhat.com/security/cve/CVE-2026-5164 · Vendor Advisory
• https://t.me/cveNotify/161251 · Telegram Post
• https://twitter.com/cyberbivash/status/2038650072938774657 · Twitter Post
• https://twitter.com/CVEnew/status/2039004531464249502 · Twitter Post
• https://twitter.com/infoflowcloud/status/2039007033416884378 · Twitter Post