Bug 2443789 (CVE-2026-3196) - CVE-2026-3196 qemu-kvm: virtio-snd: integer overflow leading to unbounded memory allocation
Summary: CVE-2026-3196 qemu-kvm: virtio-snd: integer overflow leading to unbounded mem...
Keywords:
Status: NEW
Alias: CVE-2026-3196
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2443814
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-03-02 11:49 UTC by OSIDB Bzimport
Modified: 2026-03-02 13:16 UTC (History)
0 users

Fixed In Version:
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Description OSIDB Bzimport 2026-03-02 11:49:57 UTC 
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.

Upstream patch series:
https://lore.kernel.org/qemu-devel/20260220-virtio-snd-series-v1-0-207c4f7200a2@linaro.org/

QEMU fix commit:
https://gitlab.com/qemu-project/qemu/-/commit/61679d7dcfa2dffc8fb115aa19b09e0e7cf5ea5c
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