CVE-2026-68152 Linux CVE debrief

Who should care

Linux kernel maintainers, Linux distribution vendors, and users of Linux-based systems should be aware of this vulnerability and take steps to mitigate it. They should review their systems for potential exposure, apply patches or updates, and monitor system logs for potential exploitation attempts. Additionally, they should implement compensating controls such as memory protection mechanisms to prevent potential exploitation.

Technical summary

The Linux kernel has a use-after-free vulnerability in AMT delayed works. When an AMT device is removed, pending delayed works can still access the freed amt_dev structure, potentially causing kernel crashes or memory corruption. The vulnerability is resolved by using disable_delayed_work_sync() in amt_dev_stop() to prevent req_wq and discovery_wq from being queued again and wait for running work items to complete. This change ensures that the delayed work lifecycle is synchronized with the lifetime of the AMT device, preventing use-after-free vulnerabilities.

Defensive priority

High priority due to potential for kernel crashes or memory corruption

Recommended defensive actions

• Inventory and assess Linux kernel versions for potential vulnerability
• Apply patches or updates from the Linux kernel maintainers
• Monitor system logs for potential exploitation attempts
• Implement compensating controls, such as memory protection mechanisms
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed
• Check relevant monitoring, detection, and logs for exposed assets that need extra review

Evidence notes

The CVE record and NVD entry provide details on the vulnerability in the Linux kernel related to a use-after-free vulnerability in AMT delayed works. However, the vendor and product information is not available, making it difficult to determine the affected scope. Defenders should verify the Linux kernel versions used in their systems and check for potential exposure. They should also review system logs for potential exploitation attempts and implement compensating controls such as memory protection mechanisms.

Official resources