Out-of-bounds Write Affecting gdb-gdbserver package, versions *


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.12% (2nd percentile)

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  • Snyk IDSNYK-RHEL8-GDBGDBSERVER-19732814
  • published13 Sept 2026
  • disclosed6 Aug 2026

Introduced: 6 Aug 2026

CVE-2026-13732  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

There is no fixed version for RHEL:8 gdb-gdbserver.

NVD Description

Note: Versions mentioned in the description apply only to the upstream gdb-gdbserver package and not the gdb-gdbserver package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1