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Case File

CVE-2019-15847

HIGH · CVSS 7.5 EPSS 3.18%

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2019-09-02 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 7.5. See the original NVD description below for full technical details.

CVE
CVE-2019-15847
Severity
HIGH
CVSS
7.5
EPSS
3.18%

Original NVD 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.

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