Use of Uninitialized Resource
In YARA 3.8.1, bytecode in a specially crafted compiled rule can read uninitialized data from VM scratch memory in libyara/exec.c. This can allow attackers to discover addresses in the real stack (not the YARA virtual stack).
CWE-908 - Use of Uninitialized Resource
The software uses or accesses a resource that has not been initialized.