Integer Overflow Vulnerability in virtio-snd Device by Red Hat
CVE-2026-3196

5.5MEDIUM

Key Information:

Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Vendor
CVE Published:
19 June 2026

What is CVE-2026-3196?

An integer overflow vulnerability exists within the virtio-snd device related to PCM_INFO requests from guest systems. A malicious guest could exploit this flaw by supplying out-of-bounds stream counts, which may lead to excessive memory allocation on the host system. This could result in a denial of service, affecting the stability and availability of the host environment.

References

https://access.redhat.com/security/cve/CVE-2026-3196
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2443789
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Mingyuan Luo for reporting this issue.
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