CVE-2026-64011 Linux CVE debrief

Who should care

Linux kernel developers and users who rely on the NFC LLCP implementation should be aware of this vulnerability and take steps to mitigate it. This includes reviewing and applying the patch provided by the Linux kernel maintainers, ensuring that the Linux kernel is updated to a version that includes the fix, and monitoring for potential exploitation attempts.

Technical summary

The Linux kernel's NFC LLCP implementation has a use-after-free vulnerability. The llcp_sock_release() function does not properly handle sockets in the connecting state, leading to a potential use-after-free condition. This vulnerability can be exploited by an attacker to potentially execute arbitrary code or cause a denial of service. The vulnerability affects the Linux kernel's NFC LLCP implementation, and its exploitation could potentially lead to a use-after-free condition.

Defensive priority

Medium

Recommended defensive actions

• Review and apply the patch provided by the Linux kernel maintainers
• Ensure that the Linux kernel is updated to a version that includes the fix
• Monitor 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 2026-07-19T16:17:40.933Z 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 Linux kernel maintainers. The vulnerability affects the NFC LLCP implementation in the Linux kernel, and its exploitation could potentially lead to a use-after-free condition.

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.