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Vulnerability record · CVE-2026-3195 · published 19 June 2026

CVE-2026-3195: Heap-based buffer overflow vulnerability

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.

7.4 CVSS 3.1 High EPSS 0.17% · top 94.2% CWE-122 · Heap-based buffer overflow Awaiting Analysis
7.4CVSS 3.1 base score
0.17%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
5References
1 Sep 2026Last modified by NVD

Description

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.

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

References

LinkTags
https://access.redhat.com/security/cve/CVE-2026-3195
https://bugzilla.redhat.com/show_bug.cgi?id=2443817
https://access.redhat.com/security/cve/CVE-2026-3195
https://bugzilla.redhat.com/show_bug.cgi?id=2443817
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3195.json

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Source: NIST National Vulnerability Database (record CVE-2026-3195), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.