CVE-2026-80716 Linux CVE debrief

Who should care

Linux kernel users and administrators, especially those using ALSA pcm in their systems, should be aware of this vulnerability and take necessary actions to patch or mitigate it. This includes assessing Linux kernel version and ALSA pcm usage, checking for and applying kernel patches or updates, and monitoring system logs for potential exploitation attempts. Compensating controls such as intrusion detection systems may also be considered for exposed systems while remediation is scheduled and verified. Security teams and vulnerability management teams should prioritize this vulnerability due to its high severity and potential operational impact. IT operators and platform administrators must review the vulnerability's impact on their environments and coordinate with security teams for appropriate actions. Asset inventory and change management processes should be leveraged to ensure timely patching or mitigation of affected systems. This vulnerability's resolution requires coordination between Linux kernel developers, distribution maintainers, and end-users to ensure proper patching and mitigation. The vulnerability's technical details and defensive recommendations should be reviewed and acted upon by relevant technical stakeholders, including security teams, IT operators, and system administrators. The vulnerability management process should include tracking of exceptions, retesting of remediated assets, and closure only after evidence of successful remediation is documented. Compensating controls and monitoring capabilities should be evaluated and implemented where necessary to detect and respond to potential exploitation attempts. The resolution of this vulnerability involves technical stakeholders, including Linux kernel developers, distribution maintainers, and end-users, to ensure proper patching and mitigation. The vulnerability's impact on business operations and services should be assessed, and appropriate risk management actions should be taken. The vulnerability's resolution requires a coordinated effort from multiple stakeholders, including Linux kernel developers, distribution maintainers, and end-users, to ensure proper patching and mitigation. The AL

Technical summary

The Linux kernel's ALSA pcm component has a vulnerability where an on-stack wait entry is not properly removed when a linked stream is unlinked, potentially leading to a use-after-free condition. This issue has been resolved by waking linked drain waiters on unlink. The vulnerability affects Linux kernel users who utilize ALSA pcm in their systems. A high CVSS score of 7.8 and HIGH severity classification emphasize the need for prompt assessment and patching.

Defensive priority

This vulnerability has a high CVSS score of 7.8 and is classified as HIGH severity. Linux kernel users should prioritize assessment and patching.

Recommended defensive actions

• Assess Linux kernel version and ALSA pcm usage
• Check for and apply kernel patches or updates
• Monitor system logs for potential exploitation attempts
• Consider compensating controls such as intrusion detection systems
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed

Evidence notes

The vulnerability is in the Linux kernel's ALSA pcm component, specifically in the handling of linked streams and drain waiters. An on-stack wait entry is not properly removed when a linked stream is unlinked, potentially leading to a use-after-free condition. This issue has been resolved by waking linked drain waiters on unlink. Linux kernel users should verify their ALSA pcm usage and patch or mitigate this vulnerability accordingly. Evidence is limited to public CVE details and NVD assessments.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.