CVE-2025-5868 RT-Thread lwp_syscall.c sys_thread_sigprocmask array index

A vulnerability, which was classified as critical, has been found in RT-Thread 5.1.0. This issue affects the function systhreadsigprocmask of the file rt-thread/components/lwp/lwpsyscall.c. The manipulation of the argument how leads to improper validation of array index...