CVE-2026-64001 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution vendors, and users of Linux-based systems should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability exists in the snd_pcm_oss_proc_write() function, which links a newly allocated setup entry into the OSS setup list before duplicating the task name. If task-name allocation fails, the error path frees the linked entry, leaving setup_list pointing at freed memory. A later OSS device open can walk the stale list entry in snd_pcm_oss_look_for_setup() and dereference freed memory. The affected product is the Linux kernel.

Defensive priority

Medium

Recommended defensive actions

• Review and apply the provided kernel patches
• Monitor Linux kernel updates and apply patches promptly
• Consider implementing additional memory safety mechanisms
• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up
• 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

Evidence notes

The CVE record was published on 2026-07-19T16:17:39.700Z and has not been modified since then. The NVD entry is currently Received. There is limited information available about the vulnerability, and defenders should verify the affected scope and severity with the official CVE record and vendor guidance.

Official resources