Heap-buffer-overflow in ultrahdr::IccHelper::readIccColorGamut

{
  "id": "94e9cb8b4c343cb9a3ece698b483b6d76b2b248dd5b7dd8342dde7870b29622a",
  "url": "https://osv.dev/vulnerability/OSV-2026-568",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Heap-buffer-overflow in ultrahdr::IccHelper::readIccColorGamut",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=501676165 ``` Crash type: Heap-buffer-overflow READ 1 Crash state: ultrahdr::IccHelper::readIccColorGamut ultrahdr::JpegR::decodeJPEGR uhdr_decode ```",
    "evidence": "osv:OSV-2026-568",
    "products": [
      {
        "name": {
          "value": "libultrahdr",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v1.3.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v1.4.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v1.5.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v1.5.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v2.0.0",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v2.0.1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v2.0.2",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2026-568",
      "aliases": [
        "OSV-2026-568"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/google/libultrahdr.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "cff53d31267fd8396ecf6bf03f212fc8387f5672"
                }
              ]
            }
          ],
          "package": {
            "name": "libultrahdr",
            "purl": "pkg:generic/libultrahdr",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v1.3.1",
            "v1.4.0",
            "v1.5.0",
            "v1.5.1",
            "v2.0.0",
            "v2.0.1",
            "v2.0.2"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libultrahdr/OSV-2026-568.yaml"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-19T15:18:25.403198Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=501676165"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 375316,
  "published_at": "2026-04-13T00:10:08.507185+00:00"
}