{"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\nread_member_functions() function in gdb/stabsread.c contains a linked\nlist removal bug in the code that separates destructor and non-destructor\nmember 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)"],"patched":["enterprise_linux_appstream_v_10","enterprise_linux_appstream_v_8","enterprise_linux_appstream_v_9"],"published":"2026-08-31","updated":"2026-10-14","sourceUpdated":"2026-10-14T19:17:14.033","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-2026:73426","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:73427","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:79357","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82447","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:82939","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"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-13732.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-13732"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13732"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00133,"epssPercentile":0.02793,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-01T14:33:22.469791Z"},"ingestedAt":"2026-09-29T16:39:33.274Z","slug":"CVE-2026-13732","body":"## Overview\n\nA flaw was found in GDB's STABS debug format parser. The\nread_member_functions() function in gdb/stabsread.c contains a linked\nlist removal bug in the code that separates destructor and non-destructor\nmember functions of C++ classes. The bug causes the destructor entries to\nremain in the main function list while the list length counter is\ndecremented, resulting in an out-of-bounds write when the function list\nis copied to its final allocated array. An attacker can craft an ELF\nbinary with malicious .stab and .stabstr sections that triggers this\nout-of-bounds write when a user opens the file in GDB and performs any\nsymbol-inspection operation such as setting a breakpoint. The inferior\nprocess does not need to be executed. Under controlled conditions, this\nwas demonstrated to achieve execution of arbitrary commands within the\nGDB process.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:73427** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-09-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:73427)\n- **RHSA-2026:73425** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8) · released 2026-09-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:73425)\n- **RHSA-2026:73426** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9) · released 2026-09-29 · [advisory](https://access.redhat.com/errata/RHSA-2026:73426)\n- **Red Hat VEX** · Important · affected: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · no fix planned: Red Hat Enterprise Linux 6, Red Hat Enterprise Linux 7 · updated 2026-10-14 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-13732.json)\n- **RHSA-2026:79357** · Red Hat · fixed in: Red Hat Cost Management On-Premise 1 · released 2026-10-08 · [advisory](https://access.redhat.com/errata/RHSA-2026:79357)\n- **RHSA-2026:82447** · Red Hat · fixed in: Red Hat Hardened Images · released 2026-10-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:82447)","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}