Security Advisory
CVE-2019-15847
7.5
HIGH
Vulnerability Description
The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the __builtin_darn intrinsic into a single call, thus reducing the entropy of the random number generator. This occurred because a volatile operation was not specified. For example, within a single execution of a program, the output of every __builtin_darn() call may be the same.
Published Date
September 2, 2019
Official Source
NIST NVD Advisory