# CVE-2026-3196: QEMU virtio-snd integer overflow in PCM_INFO requests

Source: https://junglewise.ai/threats/cve-2026-3196-qemu-virtio-snd-integer-overflow-in-pcm-info-requests  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-06-19. Updated: 2026-06-21  
License: CC BY 4.0 with a link back

CVE-2026-3196 · Severity: medium · CVSS 5.5 · Published 2026-06-19

A security vulnerability has been identified in QEMU, a widely used virtualization tool that allows computers to run multiple operating systems simultaneously. A malicious user within a virtual machine could exploit this flaw to crash the host system or exhaust its memory resources. This results in a denial of service, potentially disrupting other virtual machines and services running on the same physical hardware.

Technologies: [Red Hat Enterprise Linux 10](https://junglewise.ai/threats/technologies/enterprise-linux-10), [Red Hat Enterprise Linux 8](https://junglewise.ai/threats/technologies/enterprise-linux-8), [Red Hat Enterprise Linux 9](https://junglewise.ai/threats/technologies/enterprise-linux-9). Vendors: [Red Hat](https://junglewise.ai/threats/vendors/red-hat).

## Quick answers

**Is CVE-2026-3196 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-3196 being exploited in the wild.

**How severe is CVE-2026-3196?** Medium severity, with a CVSS score of 5.5, published 19 June 2026.

**Which products and versions are affected?** QEMU Project QEMU 8.2.0 to 10.2.1; Red Hat Red Hat Enterprise Linux 10; Red Hat Red Hat Enterprise Linux 9; Red Hat Red Hat Enterprise Linux 8.

**Is there a fix for CVE-2026-3196?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2026-3196 attacked?** It is attacked with local access, in a software library.

**Am I affected by CVE-2026-3196?** Check whether you run Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8 or Red Hat Enterprise Linux 9. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

An integer overflow vulnerability exists in the virtio-snd device component of QEMU during the processing of PCM_INFO requests. The flaw is triggered when a guest provides out-of-bounds stream counts, which leads to improper calculation of memory requirements. An attacker with local access to a guest virtual machine can exploit this to trigger unbounded memory allocation on the host system, resulting in a denial of service (DoS). The vulnerability is tracked as CWE-190 and affects QEMU versions 8.2.0 through 10.2.1. A fix has been committed to the upstream QEMU repository.

## Affected products

- QEMU Project QEMU 8.2.0 to 10.2.1
- Red Hat Red Hat Enterprise Linux 10
- Red Hat Red Hat Enterprise Linux 9
- Red Hat Red Hat Enterprise Linux 8

## Timeline

- 2026-03-02: disclosed: Initial report in Red Hat Bugzilla
- 2026-06-19: advisory: NVD publication date

## References

- [https://gitlab.com/qemu-project/qemu](https://gitlab.com/qemu-project/qemu)
- [https://access.redhat.com/downloads/content/package-browser/](https://access.redhat.com/downloads/content/package-browser/)
- [https://access.redhat.com/security/cve/CVE-2026-3196](https://access.redhat.com/security/cve/CVE-2026-3196)
- [https://bugzilla.redhat.com/show_bug.cgi?id=2443789](https://bugzilla.redhat.com/show_bug.cgi?id=2443789)

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