osv-2026-534
Vulnerability from osv_ossfuzz
Published
2026-04-05 00:10
Modified
2026-04-05 00:10
Summary
Heap-buffer-overflow in cram_encode_container
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=499447432

Crash type: Heap-buffer-overflow READ 1
Crash state:
cram_encode_container
cram_flush_container_mt
cram_close
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "introduced_range": "b13f80a87398767a55c6da28601ff0cff3500a66:bf93316d3575eb623a72d84ec67cc5b8ce2d1448"
      },
      "ecosystem_specific": {
        "severity": "MEDIUM"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "htslib",
        "purl": "pkg:generic/htslib"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "7f7e830cf106dbdb6390fbb53fbd5af88eec82f2"
            },
            {
              "fixed": "52981170b31d92c1450220bd5941f355844de706"
            }
          ],
          "repo": "https://github.com/samtools/htslib.git",
          "type": "GIT"
        }
      ],
      "versions": []
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=499447432\n\n```\nCrash type: Heap-buffer-overflow READ 1\nCrash state:\ncram_encode_container\ncram_flush_container_mt\ncram_close\n```\n",
  "id": "OSV-2026-534",
  "modified": "2026-04-05T00:10:00.163328Z",
  "published": "2026-04-05T00:10:00.162903Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=499447432"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "Heap-buffer-overflow in cram_encode_container"
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




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

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.