USB Audio Interface Vulnerability in Linux Kernel

CVE-2026-80828

What is CVE-2026-80828?

The Linux Kernel contains a vulnerability in the USB audio interface that may prevent proper system resume from sleep states after errors occur. When system resume fails, the audio card may become unusable until the device is rebooted, as certain cleanup actions are skipped. This issue, originating from the ALSA subsystem, involves improper handling when the 'snd_usb_pcm_resume()' or 'snd_usb_mixer_resume()' functions fail. Consequently, the control access can become blocked, leading to lingering power states that disrupt subsequent suspend and resume cycles. Mitigation steps are required to avoid these resource management issues, ensuring that user devices maintain operational integrity during system transitions.

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