Heap Out-of-Bounds Write Vulnerability in QEMU Virtio-snd Device
CVE-2026-3195

7.4HIGH

Key Information:

Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 6
Red Hat Enterprise Linux 7
Vendor
CVE Published:
19 June 2026

What is CVE-2026-3195?

A vulnerability exists in the QEMU virtio-snd device due to inadequate validation of input audio data buffers in the virtio_snd_pcm_in_cb function. This oversight allows for potential heap out-of-bounds writes, which can lead to significant security risks, especially when dealing with user-supplied audio input. This flaw stems from an incomplete resolution associated with a previously reported issue, making it critical for users of affected QEMU versions to apply the necessary updates and patches to mitigate these risks.

References

https://access.redhat.com/security/cve/CVE-2026-3195
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2443817
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
7.4
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank DARKNAVY (DarkNavyOrg) and Mingyuan Luo for reporting this issue.
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