CVE-2026-64133 Linux CVE debrief

Who should care

Users of the Linux kernel, particularly those using the ALSA asihpi component, should be aware of this vulnerability and take steps to mitigate it. This includes applying patches, using supported and up-to-date Linux kernel versions, and monitoring system logs for potential exploitation attempts.

Technical summary

The vulnerability is caused by the find_control() function in the Linux kernel's ALSA asihpi component. The function accesses an array with a given index without proper validation, which can lead to an out-of-bounds (OOB) array access. This vulnerability can be exploited by an attacker to potentially execute arbitrary code or cause a denial of service. Users should apply patches or use supported and up-to-date Linux kernel versions.

Defensive priority

Medium

Recommended defensive actions

• Apply the patch to fix the vulnerability
• Use a supported and up-to-date Linux kernel version
• Monitor system logs for potential exploitation attempts
• Review compensating controls for exposed systems while remediation is scheduled and verified
• Check relevant monitoring, detection, and logs for exposed assets that need extra review
• Track exceptions, retest remediated assets, and close the item only after evidence is documented
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up

Evidence notes

The CVE record was published on 2026-07-19T16:17:55.103Z and has not been modified since then. The NVD entry is currently Received. The Linux kernel's ALSA asihpi component has a potential OOB array access vulnerability due to the find_control() function accessing an array with a given index without proper validation. Users should verify their systems and apply patches or mitigations as needed. Evidence is limited to CVE and NVD details.

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.