Qemu-kvm: virtio-snd: heap buffer overflow in virtio_snd_pcm_in_cb (incomplete fix for cve-2024-7730)
A flaw was found in QEMU. When reading input audio in the virtio-snd device input callback, the `virtio_snd_pcm_in_cb` function did not check whether the iov could fit the data buffer, potentially leading to a heap out-of-bounds write. This issue exists due to an incomplete fix for CVE-2024-7730.
02 / AFFECTED SOFTWARE
Affected packages
36 explicit affected versions
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
A flaw was found in QEMU. When reading input audio in the virtio-snd device input callback, the `virtio_snd_pcm_in_cb` function did not check whether the iov could fit the data buffer, potentially leading to a heap out-of-bounds write. This issue exists due to an incomplete fix for CVE-2024-7730.
05 / REFERENCES
Further evidence
- https://access.redhat.com/downloads/content/package-browser/
- https://access.redhat.com/security/cve/CVE-2026-3195
- https://bugzilla.redhat.com/show_bug.cgi?id=2443817
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/3xxx/CVE-2026-3195.json
- https://gitlab.com/qemu-project/qemu
- https://nvd.nist.gov/vuln/detail/CVE-2026-3195
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3195.json