CVE-2026-92488 Linux CVE debrief

Who should care

Linux kernel maintainers, administrators of systems using the Linux kernel, and security teams responsible for monitoring and patching Linux systems should assess exposure and apply patches or mitigations as necessary.

Why it matters

A vulnerability in the Linux kernel's RDMA subsystem could lead to resource leaks if not properly cleaned up during object destruction. Defenders should verify kernel versions, apply patches, and monitor system logs to ensure proper resource cleanup and mitigate potential issues.

• Verify resource cleanup and release during RDMA object destruction to prevent potential resource leaks.
• Assess the Linux kernel version and apply patches to ensure proper resource cleanup.
• Monitor system logs for signs of RDMA-related issues or resource leaks.

Technical summary

The Linux kernel's RDMA subsystem had a vulnerability where the destroy commands for queue pairs, completion queues, memory regions, and address handles did not properly clean up resources on failure. This could lead to resource leaks. The issue has been resolved by ensuring all software-owned resources are released during terminal destruction. Affected Linux kernel deployments should be reviewed for exposure, and patches should be applied to prevent resource leaks. System administrators should verify kernel versions, monitor system logs for signs of RDMA-related issues, and ensure proper resource cleanup.

Defensive priority

Medium

Recommended defensive actions

• Review and apply the kernel patches to ensure the RDMA subsystem is properly cleaning up resources.
• Verify the Linux kernel version is up-to-date and aligned with the vendor's recommendations.
• Monitor system logs for any signs of resource leaks or RDMA-related issues.
• Perform a thorough review of system configurations to ensure RDMA objects are properly destroyed.
• Verify resource cleanup and release during RDMA object destruction to prevent potential resource leaks.
• Assess the Linux kernel version and apply patches to ensure proper resource cleanup.
• Track and document the patching process for auditing and compliance purposes.

Evidence notes

The CVE record and NVD entry provide details on the vulnerability. However, the corpus does not establish specific versions affected or exploitation details, requiring verification from official sources.

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.