CVE-2026-53242: ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams
ALSA: PCM: Fix wait queue list corruption in sndpcmdrain() on linked streams
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 6.6.143.1-1 - Upgrade
Upgrade
Linux kernelto a version that resolves this vulnerability.Patch ALSA: PCM: Fix wait queue list corruption in snd_pcm_drain() on linked streams - Compensating control
If you cannot immediately apply the kernel fix, avoid triggering snd_pcm_drain() on linked ALSA PCM streams (e.g., do not drain linked streams concurrently) to prevent the linked wait-queue list corruption that can lead to kernel panic.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-53242?
CVE-2026-53242 has a high severity rating of 7.8.
How do I fix CVE-2026-53242?
To fix CVE-2026-53242, apply the latest Linux kernel updates that address this vulnerability.
What systems are affected by CVE-2026-53242?
CVE-2026-53242 affects the Linux kernel, specifically the ALSA PCM component involved in audio processing.
What risks are associated with CVE-2026-53242?
CVE-2026-53242 may lead to wait queue list corruption, potentially resulting in system instability or crashes.
When was CVE-2026-53242 published?
CVE-2026-53242 was published on June 25, 2026.