Use-of-uninitialized-value in DoTestOneInput

{
  "id": "3add1725bfd6e374ab5ca419957638ddb391191fcb83bb2869bd36252378a61e",
  "url": "https://osv.dev/vulnerability/OSV-2026-564",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Use-of-uninitialized-value in DoTestOneInput",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=501356662 ``` Crash type: Use-of-uninitialized-value Crash state: DoTestOneInput djxl_fuzzer.cc ```",
    "evidence": "osv:OSV-2026-564",
    "products": [
      {
        "name": {
          "value": "libjxl",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v0.12-snapshot",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v0.12.0",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2026-564",
      "aliases": [
        "OSV-2026-564"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/libjxl/libjxl.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "efd4c04dc1c493534fdd6b1d92d7c6d0e7ff9d3f"
                },
                {
                  "fixed": "ec2982b1f79e9eebf5a514df759d0bb41b8f240d"
                }
              ]
            }
          ],
          "package": {
            "name": "libjxl",
            "purl": "pkg:generic/libjxl",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v0.12-snapshot",
            "v0.12.0"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libjxl/OSV-2026-564.yaml",
            "fixed_range": "e47d2a2b5bb418f2947ce07f36cb048861db3820:ec2982b1f79e9eebf5a514df759d0bb41b8f240d",
            "introduced_range": "37bbfd09b4fd42554940ac2c0b72a1121cfa6d8a:7cc4da3a4a3b83e0e5d6bea22e48474f3f8b6fcc"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-27T14:45:09.492448439Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=501356662"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 462568,
  "published_at": "2026-04-12T00:05:43.86141+00:00"
}