Vulnerability · Published Jun 19, 2026 · Assigned by fedora
CVE-2026-3195Qemu-kvm: virtio-snd: heap buffer overflow in virtio_snd_pcm_in_cb (incomplete fix for cve-2024-7730)
High 7.4
In plain English
A high-severity heap buffer overflow in qemu. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 7% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.4High
Exploit odds (30 days)0.2%top 93.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | qemu | 1:10.0.10+ds-0+deb13u1 | DEBIAN-CVE-2026-3195 |
| Debian:14 | qemu | 1:10.2.2+ds-1 | DEBIAN-CVE-2026-3195 |
| Ubuntu:24.04:LTS | qemu | 1:8.2.2+ds-0ubuntu1.16 | UBUNTU-CVE-2026-3195 |
| Ubuntu:25.10 | qemu | 1:10.1.0+ds-5ubuntu2.6 | UBUNTU-CVE-2026-3195 |
| Ubuntu:26.04:LTS | qemu | no fix listed | UBUNTU-CVE-2026-3195 |
| Ubuntu:26.10 | qemu | no fix listed | UBUNTU-CVE-2026-3195 |
| Ubuntu:26.04:LTS | qemu-hwe | no fix listed | UBUNTU-CVE-2026-3195 |
| Ubuntu:26.10 | qemu-hwe | no fix listed | UBUNTU-CVE-2026-3195 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| qemu | 8.2.0 – through 10.2.1 | |
| Red Hat | Red Hat Enterprise Linux 10 | see references |
| Red Hat | Red Hat Enterprise Linux 6 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 7 | see references |
| Red Hat | Red Hat Enterprise Linux 8 | see references |
| Red Hat | Red Hat Enterprise Linux 9 | see references |
| Red Hat | Red Hat OpenShift Container Platform 4 | see references |
Weakness: CWE-122 · Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
References
- https://access.redhat.com/security/cve/CVE-2026-3195 vdb-entry, x_refsource_REDHAT
- RHBZ#2443817 issue-tracking, x_refsource_REDHAT
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-3195.json x_sadp-csaf-vex