Audio Buffer Vulnerability in FreeBSD Operating System

CVE-2026-49417

What is CVE-2026-49417?

The vulnerability involves an issue with audio buffer management in the FreeBSD Operating System. When the audio device is closed, the buffer backing a mapping may be prematurely freed, leaving a stale reference accessible to users. As a result, unprivileged local users can exploit this vulnerability to read and write to kernel memory, leading to potential privilege escalation and full system control. Additionally, this flaw can cause kernel crashes, creating opportunities for Denial of Service attacks, compromising system stability.

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