In Eclipse ThreadX before version 6.4.0, the _Mtxinit() function in the Xtensa port was missing an array size check causing a memory overwrite. The affected file was ports/xtensa/xcc/src/tx_clib_lock.c
https://github.com/eclipse-threadx/threadx/security/advisories/GHSA-vmp6-qhp9-r66x