RHEL 9 : gdb (RHSA-2026:73426)

high Nessus Plugin ID 351213

Synopsis

The remote Red Hat host is missing a security update for gdb.

Description

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:73426 advisory.

The GNU Debugger (GDB) allows you to debug programs written in C, C++, Java, and other languages by executing them in a controlled fashion and then printing out their data.

Security Fix(es):

* gdb: Out-of-bounds write in STABS parser read_member_functions() via crafted ELF (CVE-2026-13732)

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 this issue but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL gdb package based on the guidance in RHSA-2026:73426.

Plugin Details

Severity: High

ID: 351213

File Name: redhat-RHSA-2026-73426.nasl

Version: 1.1

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/29/2026

Updated: 9/29/2026

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.9

Percentile: 58.29

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2026-13732

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

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

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:9, cpe:/o:redhat:rhel_eus:9.8, p-cpe:/a:redhat:enterprise_linux:gdb-doc, p-cpe:/a:redhat:enterprise_linux:gdb-gdbserver, p-cpe:/a:redhat:enterprise_linux:gdb-headless, p-cpe:/a:redhat:enterprise_linux:gdb-minimal, p-cpe:/a:redhat:enterprise_linux:gdb

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: 9/29/2026

Vulnerability Publication Date: 8/31/2026

Reference Information

CVE: CVE-2026-13732

CWE: 787

RHSA: 2026:73426

Detections

Analytics