CVE-2026-64494 Linux CVE debrief

Who should care

Linux kernel developers and maintainers, Linux distribution maintainers, and users of Linux-based systems with the gp2ap002 driver should verify Linux kernel versions, apply patches, and monitor system logs to prevent potential issues related to the gp2ap002 driver. Additionally, security teams and vulnerability management teams should review the CVE record and NVD entry to understand the scope of the vulnerability and apply patches to prevent potential

Why it matters

CVE-2026-64494 is a Linux kernel vulnerability in the gp2ap002 driver that can lead to runtime PM leaks on read error. Defenders should verify Linux kernel versions, apply patches, and monitor system logs to prevent potential issues.

• Verification of Linux kernel versions and gp2ap002 driver updates is necessary to prevent potential issues
• Monitoring system logs for gp2ap002 driver-related issues is recommended
• Applying the patch ensures proper cleanup on error paths, preventing runtime PM leaks

Technical summary

The gp2ap002_read_raw() function in the Linux kernel did not properly drop the runtime PM reference on error paths, leading to a permanent leak. This has been fixed by adding a 'goto out' statement to ensure proper cleanup. The vulnerability affects Linux kernel versions and requires verification of kernel updates and gp2ap002 driver patches. Defenders should review system logs for gp2ap002 driver-related issues and apply patches to prevent potential runtime PM leaks. The fix ensures that the runtime PM reference is properly dropped on error paths, preventing a permanent leak.

Defensive priority

Medium

Recommended defensive actions

• Review and apply the patch for the gp2ap002 driver to prevent runtime PM leaks
• Verify the Linux kernel version and check for updates
• Monitor system logs for potential issues related to the gp2ap002 driver
• 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 and NVD entry provide details on the vulnerability. However, the scope of affected systems and versions is not explicitly stated, requiring verification from official sources such as Linux kernel repositories and distribution-specific documentation. Defenders should verify Linux kernel versions, check for gp2ap002 driver updates, and monitor system logs for potential issues related to the gp2ap002 driver.

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.