rustsec-2023-0046
Vulnerability from osv_rustsec
Published
2023-06-15 12:00
Modified
2023-07-08 12:30
Summary
Misaligned pointer dereference in `ChunkId::new`
Details

The function ChunkId::new creates a misaligned pointer by casting mutable pointer of u8 slice which has alignment 1 to the mutable pointer of u32 which has alignment 4, and dereference the misaligned pointer leading UB, which should not be allowed in safe function.

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{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "cyfs-base",
        "purl": "pkg:cargo/cyfs-base"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [
    "GHSA-g753-ghr7-q33w"
  ],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The function `ChunkId::new` creates a misaligned pointer by casting mutable pointer of `u8` slice which has alignment 1 to the mutable pointer of `u32` which has alignment 4, and dereference the misaligned pointer leading UB, which should not be allowed in safe function.",
  "id": "RUSTSEC-2023-0046",
  "modified": "2023-07-08T12:30:19Z",
  "published": "2023-06-15T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/cyfs-base"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2023-0046.html"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/buckyos/CYFS/issues/275"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Misaligned pointer dereference in `ChunkId::new`"
}


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