osv-2026-98
Vulnerability from osv_ossfuzz
Published
2026-01-21 00:16
Modified
2026-01-21 00:16
Summary
Heap-buffer-overflow in hostname_issubdomain
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=476539622

Crash type: Heap-buffer-overflow READ 1
Crash state:
hostname_issubdomain
fuzz_util.c
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "fixed_range": "cb321709e9f20cd0949aa375dad2b97050394659:1eab169173fc4c8579a3db61186096fe117e6aca",
        "introduced_range": "e1faf705c96352906e5b867cdd772eb2808e394c:cb321709e9f20cd0949aa375dad2b97050394659"
      },
      "ecosystem_specific": {
        "severity": "MEDIUM"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "dnsmasq",
        "purl": "pkg:generic/dnsmasq"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "1269f074f86bb959863012063060a3a082d37dc4"
            },
            {
              "fixed": "1eab169173fc4c8579a3db61186096fe117e6aca"
            }
          ],
          "repo": "git://thekelleys.org.uk/dnsmasq.git",
          "type": "GIT"
        }
      ],
      "versions": [
        "v2.93test1",
        "v2.93test2",
        "v2.93test3",
        "v2.93test4",
        "v2.93test5",
        "v2.93test6"
      ]
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=476539622\n\n```\nCrash type: Heap-buffer-overflow READ 1\nCrash state:\nhostname_issubdomain\nfuzz_util.c\n```\n",
  "id": "OSV-2026-98",
  "modified": "2026-01-21T00:16:59.551548Z",
  "published": "2026-01-21T00:16:59.551255Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=476539622"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "Heap-buffer-overflow in hostname_issubdomain"
}


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