OESA-2026-4508 (CVE-2026-13732)

Vulnerability from osv_openeuler – Published: 2026-10-22 14:35 – Updated: 2026-10-22 14:35 – Source website
VLAI
Summary
gdb security update
Details

GDB, the GNU Project debugger, allows you to see what is going on inside another program while it executes -- or what another program was doing at the moment it crashed.

Security Fix(es):

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.(CVE-2026-13732)

Severity
7.0 (High)
CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "gdb-14.1-17.oe2403sp4.aarch64.rpm",
          "gdb-debuginfo-14.1-17.oe2403sp4.aarch64.rpm",
          "gdb-debugsource-14.1-17.oe2403sp4.aarch64.rpm",
          "gdb-gdbserver-14.1-17.oe2403sp4.aarch64.rpm",
          "gdb-headless-14.1-17.oe2403sp4.aarch64.rpm"
        ],
        "noarch": [
          "gdb-help-14.1-17.oe2403sp4.noarch.rpm"
        ],
        "src": [
          "gdb-14.1-17.oe2403sp4.src.rpm"
        ],
        "x86_64": [
          "gdb-14.1-17.oe2403sp4.x86_64.rpm",
          "gdb-debuginfo-14.1-17.oe2403sp4.x86_64.rpm",
          "gdb-debugsource-14.1-17.oe2403sp4.x86_64.rpm",
          "gdb-gdbserver-14.1-17.oe2403sp4.x86_64.rpm",
          "gdb-headless-14.1-17.oe2403sp4.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:24.03-LTS-SP4",
        "name": "gdb",
        "purl": "pkg:rpm/openEuler/gdb\u0026distro=openEuler-24.03-LTS-SP4"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "14.1-17.oe2403sp4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "GDB, the GNU Project debugger, allows you to see what is going on inside another program while it executes -- or what another program was doing at the moment it crashed.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in GDB\u0026apos;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.(CVE-2026-13732)",
  "id": "OESA-2026-4508",
  "modified": "2026-10-22T14:35:59Z",
  "published": "2026-10-22T14:35:59Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-4508"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-13732"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "gdb security update",
  "upstream": [
    "CVE-2026-13732"
  ]
}



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