Linux Distros Unpatched Vulnerability : CVE-2019-15847

high Nessus Plugin ID 252626

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Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

- 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. (CVE-2019-15847)

Note that Nessus relies on the presence of the package as reported by the vendor.

Solution

There is no known solution at this time.

Plugin Details

Severity: High

ID: 252626

File Name: unpatched_CVE_2019_15847.nasl

Version: 1.1

Type: local

Agent: unix

Family: Misc.

Published: 8/20/2025

Updated: 8/20/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

CVSS Score Source: CVE-2019-15847

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:gcc-8-cross, cpe:/o:canonical:ubuntu_linux:22.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:gcc-7-cross, cpe:/o:canonical:ubuntu_linux:24.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:gcc-6, cpe:/o:canonical:ubuntu_linux:25.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:gcc-snapshot, p-cpe:/a:canonical:ubuntu_linux:gcc-6-cross-ports, p-cpe:/a:canonical:ubuntu_linux:gcc-8-cross-ports, p-cpe:/a:canonical:ubuntu_linux:gcc-7-cross-ports, p-cpe:/a:canonical:ubuntu_linux:gcc-6-cross, p-cpe:/a:canonical:ubuntu_linux:gcc-9-cross-ports, cpe:/o:canonical:ubuntu_linux:20.04:-:lts

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 9/2/2019

Reference Information

CVE: CVE-2019-15847

Detections

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