data/osv/GO-2026-5051.json

{
  "schema_version": "1.3.1",
  "id": "GO-2026-5051",
  "modified": "0001-01-01T00:00:00Z",
  "published": "0001-01-01T00:00:00Z",
  "summary": "Out-of-bounds read and panic in ReadDir in github.com/cloudsoda/go-smb2 and github.com/hirochachacha/go-smb2",
  "details": "ReadDir and ReadDirPlus parse the QUERY_DIRECTORY SMB response by advancing through entries using the server-supplied NextEntryOffset field. The pre-fix code does not bound next against the remaining buffer before re-slicing, and the entry decoder IsInvalid check performs length arithmetic in int after narrowing from uint16.\n\nA guest or anonymous directory listing against an attacker-controlled or man-in-the-middle SMB server crashes the Go client process with a runtime panic when the response contains an entry whose NextEntryOffset is larger than the remaining buffer, or whose declared FileNameLength produces a length that does not match the actual buffer size.",
  "affected": [
    {
      "package": {
        "name": "github.com/cloudsoda/go-smb2",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.0.0-20260609183447-7b96c35f5f4b"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "github.com/cloudsoda/go-smb2",
            "symbols": [
              "Share.ReadDir",
              "Share.ReadDirPlus"
            ]
          }
        ]
      }
    },
    {
      "package": {
        "name": "github.com/hirochachacha/go-smb2",
        "ecosystem": "Go"
      },
      "ranges": [
        {
          "type": "SEMVER",
          "events": [
            {
              "introduced": "0"
            }
          ]
        }
      ],
      "ecosystem_specific": {
        "imports": [
          {
            "path": "github.com/hirochachacha/go-smb2",
            "symbols": [
              "Share.ReadDir"
            ]
          }
        ]
      }
    }
  ],
  "references": [
    {
      "type": "FIX",
      "url": "https://github.com/cloudsoda/go-smb2/commit/7b96c35f5f4babfc9d68a60baf5e85f2303d4a4b"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/golang/vulndb/issues/5051"
    }
  ],
  "credits": [
    {
      "name": "Jose Rivas (bl4cksku11)"
    }
  ],
  "database_specific": {
    "url": "https://pkg.go.dev/vuln/GO-2026-5051",
    "review_status": "REVIEWED"
  }
}