CVE-2026-64332 Linux kernel CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution vendors, and organizations using Linux-based systems should be aware of this vulnerability and take steps to ensure their systems are updated with the patched kernel. These stakeholders should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

The Linux kernel's USB ulpi subsystem has a memory leak vulnerability. During early ULPI device registration failures, the allocated device name is never freed. The fix involves initializing the device structure earlier and releasing the initial reference on registration failure. This issue affects the Linux kernel and potentially derivative products. The vulnerability has been resolved through a kernel patch. However, detailed technical information about the vulnerability and its potential impact is limited.

Defensive priority

Medium priority for Linux kernel developers and maintainers, Linux distribution vendors, and organizations using Linux-based systems.

Recommended defensive actions

• Review and apply the kernel patch to fix the memory leak vulnerability
• Update Linux kernel packages to the latest version
• Verify system configurations and ensure the patched kernel is in use
• 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 2026-07-25T10:17:14.950Z and has not been modified since then. The NVD entry is currently Received. There is no additional information available about the vulnerability beyond what is provided in the CVE record and NVD entry. Linux kernel developers and maintainers should verify the patched kernel is applied. The Linux distribution vendors and organizations using Linux-based systems should also take steps to ensure their systems are updated with the patched kernel. However, detailed information about affected scope and potential impact is limited.

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.