ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams

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CVE-2026-53242 ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams

In the Linux kernel, the following vulnerability has been resolved: ALSA: PCM: Fix wait queue list corruption in sndpcmdrain on linked streams sndpcmdrain uses initwaitqueueentry which does not clear entry.prev/next, and addwaitqueue with a conditional removewaitqueue that is skipped when tocheck...

Linux kernel 安全漏洞

The Linux kernel is the core of the open-source operating system Linux, developed by the Linux Foundation in the United States. There is a security vulnerability in the Linux kernel, which stems from the issue of reusing a freed link stream after the sndpcmdrain function in ALSA pcm is released...