osv-2026-646
Vulnerability from osv_ossfuzz
Published
2026-04-29 00:04
Modified
2026-04-29 00:04
Summary
Heap-buffer-overflow in sentencepiece::unigram::Model::EncodeOptimized
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=507169860

Crash type: Heap-buffer-overflow READ 8
Crash state:
sentencepiece::unigram::Model::EncodeOptimized
sentencepiece::unigram::Model::Encode
sentencepiece::SentencePieceProcessor::Encode
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "fixed_range": "c1f97156bbd3b3ac8346f0b738b87f4e60fb857c:eb3ba49278fd10e5ae7b1d71c87f50e5a842f541"
      },
      "ecosystem_specific": {
        "severity": "MEDIUM"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "sentencepiece",
        "purl": "pkg:generic/sentencepiece"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "ea83729ca83c4696a775d3d1e8a03e3bd4fa8d97"
            },
            {
              "fixed": "eb3ba49278fd10e5ae7b1d71c87f50e5a842f541"
            }
          ],
          "repo": "https://github.com/google/sentencepiece.git",
          "type": "GIT"
        }
      ],
      "versions": []
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=507169860\n\n```\nCrash type: Heap-buffer-overflow READ 8\nCrash state:\nsentencepiece::unigram::Model::EncodeOptimized\nsentencepiece::unigram::Model::Encode\nsentencepiece::SentencePieceProcessor::Encode\n```\n",
  "id": "OSV-2026-646",
  "modified": "2026-04-29T00:04:02.165140Z",
  "published": "2026-04-29T00:04:02.164830Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=507169860"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "Heap-buffer-overflow in sentencepiece::unigram::Model::EncodeOptimized"
}


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