---
id: CVE-2026-13732
title: A flaw was found in GDB's STABS debug format parser
summary: |-
  A flaw was found in GDB's STABS debug format parser. The
  read_member_functions() function in gdb/stabsread.c contains a linked
  list removal bug in the code that separates destructor and non-destructor
  member functions of C++ classes. The…
severity: high
cvss: 7
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
vendor: Red Hat
product: gdb
affected:
  - gdb (all versions)
  - gdb (all versions)
  - gdb (all versions)
  - gdb (all versions)
  - gdb (all versions)
  - gdb (all versions)
published: '2026-08-31'
updated: '2026-09-29'
sourceUpdated: '2026-09-29T17:17:08.417'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-13732'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:73425'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:73427'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-13732'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2494416'
    label: secalert@redhat.com
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-01T14:33:22.469791Z'
epss: 0.00121
epssPercentile: 0.01679
ingestedAt: '2026-09-29T16:39:33.274Z'
---

## Overview

A flaw was found in GDB's STABS debug format parser. The
read_member_functions() function in gdb/stabsread.c contains a linked
list removal bug in the code that separates destructor and non-destructor
member functions of C++ classes. The bug causes the destructor entries to
remain in the main function list while the list length counter is
decremented, resulting in an out-of-bounds write when the function list
is copied to its final allocated array. An attacker can craft an ELF
binary with malicious .stab and .stabstr sections that triggers this
out-of-bounds write when a user opens the file in GDB and performs any
symbol-inspection operation such as setting a breakpoint. The inferior
process does not need to be executed. Under controlled conditions, this
was demonstrated to achieve execution of arbitrary commands within the
GDB process.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.