cve/2019/CVE-2019-15847.md

CVE-2019-15847

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.

POC

Reference

No PoCs from references.

Github

• https://github.com/ARPSyndicate/cvemon
• https://github.com/Azure/publish-security-assessments
• https://github.com/PajakAlexandre/wik-dps-tp02
• https://github.com/actions-marketplace-validations/Azure_publish-security-assessments
• https://github.com/garethr/snykout