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gdm3 — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2018-14424

The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially crafted sequence of D-Bus method calls, resulting in a denial of service or potential code execution.

Products
gdm3
Affected versions
Not specified
Fixed versions
3.28.2-4
CVEs
CVE-2018-14424
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 00:47 UTC · Revision 1

Source evidence

DEBIAN-CVE-2018-14424

core-osv · Original source

Published 14 Aug 2018, 18:29 UTC

The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially crafted sequence of D-Bus method calls, resulting in a denial of service or potential code execution.

osv:DEBIAN-CVE-2018-14424

gdm3

Fixed versions: 3.28.2-4

gdm3

Fixed versions: 3.28.2-4

gdm3

Fixed versions: 3.28.2-4

Complete source record
{
  "id": "e93a1b993bd196220dc62a9ea9dd3fc0146d730faae8ab946aeb0e6802fbb0d1",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2018-14424",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2018-14424",
    "summary": "The daemon in GDM through 3.29.1 does not properly unexport display objects from its D-Bus interface when they are destroyed, which allows a local attacker to trigger a use-after-free via a specially crafted sequence of D-Bus method calls, resulting in a denial of service or potential code execution.",
    "evidence": "osv:DEBIAN-CVE-2018-14424",
    "products": [
      {
        "name": {
          "value": "gdm3",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.28.2-4",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gdm3",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.28.2-4",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "gdm3",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.28.2-4",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "DEBIAN-CVE-2018-14424",
      "aliases": [
        "DEBIAN-CVE-2018-14424"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.28.2-4"
                }
              ]
            }
          ],
          "package": {
            "name": "gdm3",
            "purl": "pkg:deb/debian/gdm3?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-14424.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.28.2-4"
                }
              ]
            }
          ],
          "package": {
            "name": "gdm3",
            "purl": "pkg:deb/debian/gdm3?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-14424.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.28.2-4"
                }
              ]
            }
          ],
          "package": {
            "name": "gdm3",
            "purl": "pkg:deb/debian/gdm3?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2018-14424.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T18:03:47.515593914Z",
      "provider": "osv",
      "upstream": [
        "CVE-2018-14424"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2018-14424"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2018-14424",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 422245,
  "published_at": "2018-08-14T18:29:00.493+00:00"
}