CVE-2019-15847
HIGH7.5EPSS 0.54%Published: 9/2/2019Modified: 11/19/2025
Also known as:ALPINE-CVE-2019-15847DEBIAN-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.
Affected packages (2)
- Alpine/gccfrom 0, < 9.3.0-r0
- Debian/gcc-9from 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 |