osv-2026-1095
Vulnerability from osv_ossfuzz
Published
2026-07-30 00:06
Modified
2026-07-30 00:06
Summary
Heap-buffer-overflow in grk::t1::CodeblockDecompressImpl::parsePacketData
Details

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=540111888

Crash type: Heap-buffer-overflow READ 8
Crash state:
grk::t1::CodeblockDecompressImpl::parsePacketData
grk::PacketParser::readData
grk::PacketParser::parsePacketData
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "fixed_range": "c9c1223c1e7bd7be579ea60e8e083ee244a78f58:553b008061c8fafcb161ae293f489e08abf2e2d1"
      },
      "ecosystem_specific": {
        "severity": "MEDIUM"
      },
      "package": {
        "ecosystem": "OSS-Fuzz",
        "name": "grok",
        "purl": "pkg:generic/grok"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "06c96bfbc38c74d386ce27018002d3febfff8f0c"
            },
            {
              "fixed": "553b008061c8fafcb161ae293f489e08abf2e2d1"
            }
          ],
          "repo": "https://github.com/GrokImageCompression/grok.git",
          "type": "GIT"
        }
      ],
      "versions": [
        "v20.3.5",
        "v20.3.6",
        "v20.3.7"
      ]
    }
  ],
  "details": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=540111888\n\n```\nCrash type: Heap-buffer-overflow READ 8\nCrash state:\ngrk::t1::CodeblockDecompressImpl::parsePacketData\ngrk::PacketParser::readData\ngrk::PacketParser::parsePacketData\n```\n",
  "id": "OSV-2026-1095",
  "modified": "2026-07-30T00:06:16.397753Z",
  "published": "2026-07-30T00:06:16.397282Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=540111888"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "Heap-buffer-overflow in grk::t1::CodeblockDecompressImpl::parsePacketData"
}



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.