CVE-2019-15847

Summary

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.

Affected Software

Weaknesses

• n/a

ADP Enrichment

CVE Program Container

Additional References

• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html

References

• https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html
• http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html
• http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html

• ←Previous
• Next→