Vulnerability in Linux Kernel Affecting ALSA USB Audio Components

CVE-2025-38729

What is CVE-2025-38729?

The vulnerability in the Linux kernel pertains to the Advanced Linux Sound Architecture (ALSA) subsystem, specifically concerning UAC3 power domain descriptors. Without proper validation of the bLength variable in these descriptors, the system is susceptible to out-of-bounds (OOB) accesses, which could potentially be exploited by malicious firmware. This flaw emphasizes the need for stringent checks and validations in the firmware to ensure robust security, preventing unexpected behavior and vulnerabilities in audio handling.

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