CVE-2026-3196

Qemu-kvm: virtio-snd: integer overflow leading to unbounded memory allocation

Published Jun 19, 2026 CVSS 3.1 · 5.5 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Ubuntu USN Ubuntu USN USN-8161-1 QEMU vulnerabilities
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title qemu-kvm: virtio-snd: integer overflow leading to unbounded memory allocation Qemu-kvm: virtio-snd: integer overflow leading to unbounded memory allocation
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Type Values Removed Values Added
First Time appeared Qemu
Qemu qemu
Vendors & Products Qemu
Qemu qemu
Type Values Removed Values Added
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.
Title qemu-kvm: virtio-snd: integer overflow leading to unbounded memory allocation
Weaknesses CWE-190
References
Metrics threat_severity

None

cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Moderate

Weaknesses

Sources

Status
PUBLISHED
Assigner
fedora
Published
Updated
Jun 22, 2026, 3:54 PM
Reserved
Feb 25, 2026, 11:09 AM
Status
Awaiting Analysis
Published
Jun 19, 2026, 5:16 PM
Modified
Jun 22, 2026, 6:16 PM
Severity
Moderate
Public date
Feb 20, 2026, 12:00 AM