CVE-2026-5164A flaw was found in virtio-win.
Updated under an hour ago ()
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It affects redhat virtio-win and 1 other product. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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
- 5.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- Weakness (CWE)
- CWE-120
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
redhat virtio-win redhat:virtio-win | all versions | NVD |
redhat enterprise_linux redhat:enterprise_linux | 9.0; 10.0 | NVD |
References
- https://access.redhat.com/security/cve/CVE-2026-5164vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2453014issue-tracking, vendor-advisory
- https://github.com/virtio-win/kvm-guest-drivers-windows/pull/1504issue-tracking, patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.