CVE-2026-74385 Linux CVE debrief

Who should care

Linux kernel administrators and developers should verify kernel versions and configurations to ensure proper socket and queue cleanup. This includes reviewing system logs for potential socket and queue leakage and updating the Linux kernel to the latest version if necessary. Security teams and vulnerability management teams should also review the vulnerability and assess potential exposure in their environments.

Why it matters

A vulnerability in the Linux kernel's nvmet-tcp subsystem has been addressed, and administrators should verify kernel versions and configurations to ensure proper socket and queue cleanup.

• Verify Linux kernel versions and configurations to ensure proper socket and queue cleanup
• Review system logs for potential socket and queue leakage

Technical summary

The Linux kernel's nvmet-tcp subsystem has a vulnerability where the return value of nvmet_tcp_set_queue_sock() was not checked in nvmet_tcp_tls_handshake_done(). This could lead to socket and queue leakage if the socket was not in the TCP_ESTABLISHED state. The vulnerability has been addressed, and administrators should verify kernel versions and configurations to ensure proper socket and queue cleanup. The issue could result in resource leaks and potential system crashes if exploited. Further review of system logs and kernel configurations is recommended to identify potential exposure.

Defensive priority

Verify Linux kernel versions and configurations to ensure proper socket and queue cleanup.

Recommended defensive actions

• Verify Linux kernel versions and configurations to ensure proper socket and queue cleanup
• Review system logs for potential socket and queue leakage
• Update Linux kernel to the latest version if necessary
• 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
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance

Evidence notes

The CVE record and NVD entry provide details on the vulnerability, but additional information on affected systems and exploitation is limited. The Linux kernel's nvmet-tcp subsystem has a vulnerability where the return value of nvmet_tcp_set_queue_sock() was not checked in nvmet_tcp_tls_handshake_done(). This could lead to socket and queue leakage if the socket was not in the TCP_ESTABLISHED state. Further review of system logs and kernel configurations is recommended to identify potential exposure.

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.