Use-of-uninitialized-value in pcpp::byteArrayToHexString

{
  "id": "ce176c5b76e8181a3308bf48ead8465003b67960b406130260ced70d70e3776a",
  "url": "https://osv.dev/vulnerability/OSV-2026-386",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Use-of-uninitialized-value in pcpp::byteArrayToHexString",
    "summary": "OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=491288647 ``` Crash type: Use-of-uninitialized-value Crash state: pcpp::byteArrayToHexString pcpp::PacketTrailerLayer::toString FuzzTarget.cpp ```",
    "evidence": "osv:OSV-2026-386",
    "products": [
      {
        "name": {
          "value": "pcapplusplus",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "v24.09",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v25.05",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v26.07",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "v26.07-test",
            "evidence": "/affected/0/versions"
          }
        ]
      }
    ],
    "severity": "unknown",
    "structured": {
      "id": "OSV-2026-386",
      "aliases": [
        "OSV-2026-386"
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/seladb/PcapPlusPlus",
              "type": "GIT",
              "events": [
                {
                  "introduced": "56668faab242e53b1282b3405eaa4bb51e474bee"
                },
                {
                  "fixed": "8ac4366c4184f096973ef4a0ca084559935828d0"
                }
              ]
            }
          ],
          "package": {
            "name": "pcapplusplus",
            "purl": "pkg:generic/pcapplusplus",
            "ecosystem": "OSS-Fuzz"
          },
          "versions": [
            "v24.09",
            "v25.05",
            "v26.07",
            "v26.07-test"
          ],
          "database_specific": {
            "source": "https://github.com/google/oss-fuzz-vulns/blob/main/vulns/pcapplusplus/OSV-2026-386.yaml",
            "fixed_range": "80c73281201f6c7354e9605a35bb3831506f5151:8ac4366c4184f096973ef4a0ca084559935828d0",
            "introduced_range": "805d75ca1f33ff33951d5082e3d3535c7a090808:4d48615c9bfb2ef0c61d50e1e1dd3e3d63a82be0"
          },
          "ecosystem_specific": {
            "severity": "MEDIUM"
          }
        }
      ],
      "modified": "2026-10-20T17:25:18.912622913Z",
      "provider": "osv",
      "references": [
        "https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=491288647"
      ]
    },
    "related_cves": [],
    "security_relevant": true,
    "severity_evidence": null
  },
  "source_id": "core-osv",
  "document_id": 389857,
  "published_at": "2026-03-12T00:17:39.103518+00:00"
}