DEBIAN-CVE-2019-15847

DEBIAN-CVE-2019-15847 PUBLISHED CVSS 7.5 HIGH

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.

Risk Scores

CVSS 3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Products

Vendor	Product	Versions
Debian:11	gcc-9	0, 0, 0

Timeline

Sep 2, 2019 CVE Published
Apr 28, 2026 CVE Updated

References

https://security-tracker.debian.org/tracker/CVE-2019-15847 advisory

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