CVE-2019-15847
7.5
HIGH
CVSS 3.1
EPSS 0.54%
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.
How to fix CVE-2019-15847
To remediate CVE-2019-15847, upgrade the affected package to a fixed version below.
- —upgrade to 9.3.0-r0 or later
- —upgrade to 9.2.1-7 or later
Is CVE-2019-15847 being exploited?
Low — EPSS is 0.5%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 9.3.0-r0
- from 0, < 9.2.1-7
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |