gdb-16.3-3.1.el9_8

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.

CVE-2026-13732
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.