Insufficient Entropy Affecting gcc7-fortran-32bit package, versions <7.4.1+r275405-4.9.2


Severity

Recommended
0.0
medium
0
10

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
3.18% (87th percentile)

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  • Snyk IDSNYK-SLES151-GCC7FORTRAN32BIT-2731069
  • published14 Apr 2022
  • disclosed16 Oct 2019

Introduced: 16 Oct 2019

CVE-2019-15847  (opens in a new tab)
CWE-331  (opens in a new tab)

How to fix?

Upgrade SLES:15.1 gcc7-fortran-32bit to version 7.4.1+r275405-4.9.2 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gcc7-fortran-32bit package and not the gcc7-fortran-32bit package as distributed by SLES. See How to fix? for SLES:15.1 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1