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CVE-2026-13732

Gdb: gdb: out-of-bounds write in stabs parser read_member_functions() via crafted elf PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Red Hat / Red Hat Enterprise Linux 10unaffected 0:16.3-3.1.el10_2 before *
Red Hat / Red Hat Enterprise Linux 8unaffected 0:8.2-20.1.el8_10 before *
Red Hat / Red Hat Enterprise Linux 9unaffected 0:16.3-3.1.el9_8 before *
Red Hat / Red Hat Cost Management On-Premise 1unaffected 1791460851 before *
Red Hat / Red Hat Hardened Imagesunaffected 17.2-6.2.hum1 before *
Red Hat / Red Hat Update Infrastructure 5unaffected 1791978534 before *
Red Hat / Red Hat Update Infrastructure 5unaffected 1791978528 before *
Red Hat / Red Hat Update Infrastructure 5unaffected 1791978528 before *
Red Hat / Red Hat Update Infrastructure 5unaffected 1791964013 before *
Red Hat / Red Hat Update Infrastructure 5unaffected 1791978693 before *
Red Hat / Red Hat Enterprise Linux 6affected
Red Hat / Red Hat Enterprise Linux 7affected

CWE

CWE-787

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.