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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.

PUBLISHED Reserved 2026-02-25 | Published 2026-06-19 | Updated 2026-06-22 | Assigner fedora




MEDIUM: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Problem types

Integer Overflow or Wraparound

Product status

Default status
unaffected

8.2.0 (semver)
affected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Default status
unaffected

Timeline

2026-03-02:Reported to Red Hat.
2026-02-20:Made public.

Credits

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

References

access.redhat.com/security/cve/CVE-2026-3196 vdb-entry

bugzilla.redhat.com/show_bug.cgi?id=2443789 (RHBZ#2443789) issue-tracking

cve.org (CVE-2026-3196)

nvd.nist.gov (CVE-2026-3196)

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