CVE-2026-23113 Linux CVE debrief

Who should care

Linux kernel users and administrators should be aware of this vulnerability. Although it is MEDIUM severity, it could potentially cause issues with system responsiveness if exploited. Users should review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.

Technical summary

The vulnerability is caused by the io_uring/io-wq component not checking for IO_WQ_BIT_EXIT inside the work run loop. This can lead to a situation where the system appears to hang or become unresponsive for an extended period. The fix involves adding a check for IO_WQ_BIT_EXIT inside the io_worker_handle_work() loop. This change helps prevent a complaint about a task being blocked for more than the configured timeout. The vulnerability has a CVSS score of 5.5 and a severity of MEDIUM.

Defensive priority

Apply patches from Linux kernel maintainers to address the issue. Monitor system responsiveness and adjust timeouts as necessary.

Recommended defensive actions

• Apply patches from Linux kernel maintainers to address the issue.
• Monitor system responsiveness and adjust timeouts as necessary.
• Consider implementing compensating controls to mitigate potential impact.
• Review system 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 was published on 2026-02-14T15:16:06.380Z and last modified on 2026-07-14T13:18:26.200Z. The NVD entry is currently Modified. This vulnerability affects Linux kernel users and administrators. The io_uring/io-wq component does not check for IO_WQ_BIT_EXIT inside the work run loop, potentially causing system responsiveness issues. The fix involves adding a check for IO_WQ_BIT_EXIT inside the io_worker_handle_work() loop. Evidence limits suggest that defenders should verify system responsiveness and adjust timeouts as necessary.

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.