CVE-2019-15847: High severity gnu compiler collection (gcc) vulnerability
The POWER9 backend in GNU Compiler Collection (GCC) before version 10 could optimize multiple calls of the builtindarn 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 builtindarn() call may be the same.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2019-15847?
CVE-2019-15847 is a vulnerability in the GNU Compiler Collection (GCC) that allows multiple calls of the __builtin_darn intrinsic to be optimized into a single call, reducing the entropy of the random number generator.
How does CVE-2019-15847 affect GNU GCC?
CVE-2019-15847 affects GNU GCC versions up to 10.1.0.
What is the severity of CVE-2019-15847?
The severity of CVE-2019-15847 is high, with a severity value of 7.5.
How can I fix CVE-2019-15847?
To fix CVE-2019-15847, users should update their GNU GCC installations to version 10.1.0 or higher.
Where can I find more information about CVE-2019-15847?
More information about CVE-2019-15847 can be found in the links provided: [Link 1](http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html), [Link 2](http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html), [Link 3](http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html).