RHEL 10 : gcc-toolset-16-gcc (RHSA-2026:98640)

medium Nessus Plugin ID 379045

Synopsis

The remote Red Hat host is missing one or more security updates for gcc-toolset-16-gcc.

Description

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:98640 advisory.

The gcc-toolset-16-gcc package contains the GNU Compiler Collection version 16.

Security Fix(es):

* gcc: Integer wrap in `std (CVE-2026-114691)

* gcc: Confirmed out-of-bounds read/write in libstdc++ parallel `std (CVE-2026-114690)

* gcc: Stack overflow in std::bitset on libstdc++ (CVE-2026-115455)

* gcc: Out-of-bounds read in std::from_chars (CVE-2026-115456)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL gcc-toolset-16-gcc package based on the guidance in RHSA-2026:98640.

Plugin Details

Severity: Medium

ID: 379045

File Name: redhat-RHSA-2026-98640.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/11/2026

Updated: 11/11/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Continuous Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.5

Percentile: 51.45

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 6.1

Temporal Score: 4.5

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

CVSS Score Source: CVE-2026-115455

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:10.3, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-gcc-c%2b%2b, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-gcc-gfortran, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-gcc-plugin-annobin, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-gcc-plugin-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-gcc, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libasan-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libatomic-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libgccjit-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libgccjit, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libgdiagnostics-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libitm-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-liblsan-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libquadmath-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libstdc%2b%2b-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libstdc%2b%2b-docs, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libtsan-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-libubsan-devel, p-cpe:/a:redhat:enterprise_linux:gcc-toolset-16-offload-nvptx, p-cpe:/a:redhat:enterprise_linux:libgdiagnostics

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 11/11/2026

Vulnerability Publication Date: 10/30/2026

Reference Information

CVE: CVE-2026-114690, CVE-2026-114691, CVE-2026-115455, CVE-2026-115456

CWE: 125, 190, 787

RHSA: 2026:98640

Detections

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