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
CVSS
7.0
Alto
EPSS
0.1%
p3
KEV
—
Exploit Today
1
0-100
Publicado: 31 ago 2026 · Última mod.: 14 oct 2026 · CWE-787
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.
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:73425
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:73426
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:73427
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:79357
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:82447
- access.redhat.comhttps://access.redhat.com/errata/RHSA-2026:82939
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2026-13732
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2494416