CWE-663: Use of a Non-reentrant Function in a Concurrent Context

The product calls a non-reentrant function in a concurrent context in which a competing code sequence (e.g. thread or signal handler) may have an opportunity to call the same function or otherwise influence its state.

A kind of CWE-662 Improper Synchronization.

From the CWE List. © The MITRE Corporation.

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• jm33-m0 emp3r0r emp3r0r Affected by Concurrent Map Access DoS (panic/crash) CVE-2026-26201 Fix available 7.0 HighFebruary 17, 2026