osv-2026-53
Vulnerability from osv_ossfuzz
Published
2026-01-15 00:16
Modified
2026-01-15 00:16
Summary
Heap-use-after-free in graph::LigatureSubstFormat1::shrink
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475607265

Crash type: Heap-use-after-free READ 8
Crash state:
graph::LigatureSubstFormat1::shrink
graph::LigatureSubstFormat1::split_context_t::shrink
hb_vector_t<unsigned int, false> graph::actuate_subtable_split<graph::LigatureSu
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "severity": "HIGH"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "harfbuzz",
        "purl": "pkg:generic/harfbuzz"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "babdb46be3f28b838b66979e5d1a6ca8d80211ec"
            },
            {
              "fixed": "b17fa8ef39b0e8ea3851d43625f366860750e385"
            }
          ],
          "repo": "https://github.com/harfbuzz/harfbuzz.git",
          "type": "GIT"
        }
      ],
      "versions": [
        "12.3.0",
        "12.3.1"
      ]
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475607265\n\n```\nCrash type: Heap-use-after-free READ 8\nCrash state:\ngraph::LigatureSubstFormat1::shrink\ngraph::LigatureSubstFormat1::split_context_t::shrink\nhb_vector_t\u003cunsigned int, false\u003e graph::actuate_subtable_split\u003cgraph::LigatureSu\n```\n",
  "id": "OSV-2026-53",
  "modified": "2026-01-15T00:16:26.118291Z",
  "published": "2026-01-15T00:16:26.117926Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=475607265"
    }
  ],
  "schema_version": "1.7.3",
  "summary": "Heap-use-after-free in graph::LigatureSubstFormat1::shrink"
}


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