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osv-2026-1196
Vulnerability from osv_ossfuzz
Published
2026-08-25 00:09
Modified
2026-08-25 00:09
Summary
Heap-buffer-overflow in yylex
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=551147457

Crash type: Heap-buffer-overflow WRITE 4
Crash state:
yylex
yyparse
hobbes::runParserOnBuffer
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "fixed_range": "a3405671223691e74f0734b36d751b3cb4b7d24d:3d08bc2cd3474bb3c41bfb21dc3c7b0b1109e5e7",
        "introduced_range": "unknown:bd8cb86615562113ae09e837b8447d22dd945e80"
      },
      "ecosystem_specific": {
        "severity": "HIGH"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "hobbes",
        "purl": "pkg:generic/hobbes"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "bd8cb86615562113ae09e837b8447d22dd945e80"
            },
            {
              "fixed": "3d08bc2cd3474bb3c41bfb21dc3c7b0b1109e5e7"
            }
          ],
          "repo": "https://github.com/morganstanley/hobbes.git",
          "type": "GIT"
        }
      ],
      "versions": []
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=551147457\n\n```\nCrash type: Heap-buffer-overflow WRITE 4\nCrash state:\nyylex\nyyparse\nhobbes::runParserOnBuffer\n```\n",
  "id": "OSV-2026-1196",
  "modified": "2026-08-25T00:09:47.072534Z",
  "published": "2026-08-25T00:09:47.072248Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=551147457"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "Heap-buffer-overflow in yylex"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

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