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VULNERABILITIES

CVE-2019-15847 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:7.5 HIGHVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html CVEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00057.html CVEMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00058.html CVEMailing ListThird Party Advisory
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91481 CVEIssue TrackingVendor Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00056.html [email protected]Mailing ListThird Party Advisory

see all 8 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-331Insufficient Entropy[email protected]

Affected Products

ProductVersions
gnu gcc
< 7.5.0
>= 8.0, < 8.4.0
>= 9.0, < 9.3.0
>= 10.0, < 10.1.0

CPE

  • cpe:2.3:a:gnu:gcc:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
opensuse leap
15.0
15.1

CPE

  • cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
  • cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

8 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2019-15847
NVD Published Date:
Sep 2, 2019
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]