osv-2026-962
Vulnerability from osv_ossfuzz
Published
2026-06-24 00:03
Modified
2026-06-24 00:03
Summary
Use-of-uninitialized-value in iup_delta_optimize
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=526770452

Crash type: Use-of-uninitialized-value
Crash state:
iup_delta_optimize
OT::tuple_delta_t::optimize
OT::TupleVariationData<OT::NumType<true, unsigned short, 2u>>::tuple_variations_
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "introduced_range": "dd291f482cc4131c0b3e9107d5eb474f89b67443:d59f62ac14b98a0b8c72ec7a00eb76b22b1800c8"
      },
      "ecosystem_specific": {
        "severity": "MEDIUM"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "harfbuzz",
        "purl": "pkg:generic/harfbuzz"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "fb7af519b5a0e2d72b0621c05ba70fb1b2eaacaf"
            },
            {
              "fixed": "6c2107ace765f95c67d65a21f94b54a2f12d80dc"
            }
          ],
          "repo": "https://github.com/harfbuzz/harfbuzz.git",
          "type": "GIT"
        }
      ],
      "versions": [
        "11.5.0",
        "11.5.1",
        "12.0.0",
        "12.1.0",
        "12.2.0",
        "12.3.0",
        "12.3.1",
        "12.3.2",
        "13.0.0",
        "13.0.1",
        "13.1.0",
        "13.1.1",
        "13.2.0",
        "13.2.1",
        "14.0.0",
        "14.1.0",
        "14.2.0",
        "14.2.1",
        "14.3.0",
        "14.3.1"
      ]
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=526770452\n\n```\nCrash type: Use-of-uninitialized-value\nCrash state:\niup_delta_optimize\nOT::tuple_delta_t::optimize\nOT::TupleVariationData\u003cOT::NumType\u003ctrue, unsigned short, 2u\u003e\u003e::tuple_variations_\n```\n",
  "id": "OSV-2026-962",
  "modified": "2026-06-24T00:03:23.339152Z",
  "published": "2026-06-24T00:03:23.338692Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=526770452"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "Use-of-uninitialized-value in iup_delta_optimize"
}



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