CVE-2026-3196
Qemu-kvm: virtio-snd: integer overflow leading to unbounded memory allocation
Description
An integer overflow vulnerability was found in the virtio-snd device via PCM_INFO requests from the guest. A malicious guest can provide out-of-bounds stream counts, potentially leading to unbounded memory allocation on the host and a denial of service condition.
INFO
Published Date :
June 19, 2026, 4:23 p.m.
Last Modified :
June 19, 2026, 4:23 p.m.
Remotely Exploit :
No
Source :
fedora
Affected Products
The following products are affected by CVE-2026-3196
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 92fb86c3-55a5-4fb5-9c3f-4757b9e96dc5 |
Solution
- Validate PCM_INFO request stream counts.
- Prevent out-of-bounds stream counts.
- Apply necessary patches to virtio-snd.
- Update the host system.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-3196 vulnerability anywhere in the article.