Security advisory

{
  "id": "cbeda3f4b82c9753e4085aa9f9e6c331b1eb9d3cdb88fe9ca6bb129f3ad5795e",
  "url": "https://osv.dev/vulnerability/CVE-2018-6551",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2018-6551",
    "summary": "The malloc implementation in the GNU C Library (aka glibc or libc6), from version 2.24 to 2.26 on powerpc, and only in version 2.26 on i386, did not properly handle malloc calls with arguments close to SIZE_MAX and could return a pointer to a heap region that is smaller than requested, eventually leading to heap corruption.",
    "evidence": "osv:CVE-2018-6551",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2018-6551",
      "aliases": [
        "CVE-2018-6551"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bminor/glibc",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fdfc9260b61d3d72541f18104d24c7bcb0ce5ca2"
                },
                {
                  "last_affected": "1c9a5c270d8b66f30dcfaf1cb2d6cf39d3e18369"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.24"
                      },
                      {
                        "last_affected": "2.26"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "glibc-2.26",
            "glibc-2.25",
            "glibc-2.25.90",
            "glibc-2.24",
            "glibc-2.24.90"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-6551.json"
          }
        },
        {
          "ranges": [
            {
              "repo": "https://sourceware.org/git/glibc.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "fdfc9260b61d3d72541f18104d24c7bcb0ce5ca2"
                },
                {
                  "last_affected": "1c9a5c270d8b66f30dcfaf1cb2d6cf39d3e18369"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.24"
                      },
                      {
                        "last_affected": "2.26"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "glibc-2.26",
            "glibc-2.25",
            "glibc-2.25.90",
            "glibc-2.24",
            "glibc-2.24.90"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-6551.json"
          }
        }
      ],
      "modified": "2026-10-24T10:30:19.592759393Z",
      "provider": "osv",
      "references": [
        "https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=8e448310d74b283c5cd02b9ed7fb997b47bf9b22",
        "https://security.netapp.com/advisory/ntap-20190404-0003/",
        "https://sourceware.org/bugzilla/show_bug.cgi?id=22774"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2018-6551",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 430057,
  "published_at": "2018-02-02T14:29:01.59+00:00"
}