rustsec-2026-0183
Vulnerability from osv_rustsec
Published
2026-05-12 12:00
Modified
2026-06-17 12:56
Summary
Potential undefined behavior when calling Remote::list()
Details

When calling Remote::list() for a remote of a git repository, when that remote does not advertise any references, git2 passes a null pointer to the unsafe function slice::from_raw_parts(). Based on the safety section documentation of function, data must be non-null even for slices of length zero. Thus, the use of a null pointer leads to undefined behavior.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [],
        "cvss": null,
        "informational": "unsound"
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "git2",
        "purl": "pkg:cargo/git2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.21.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "When calling `Remote::list()` for a remote of a git repository, when that remote does not advertise any references, git2 passes a null pointer to the unsafe function `slice::from_raw_parts()`. Based on the safety section documentation of function, data must be non-null even for slices of length zero. Thus, the use of a null pointer leads to undefined behavior.",
  "id": "RUSTSEC-2026-0183",
  "modified": "2026-06-17T12:56:48Z",
  "published": "2026-05-12T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/git2"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0183.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/rust-lang/git2-rs/pull/1250"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Potential undefined behavior when calling Remote::list()"
}


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