RUSTSEC-2026-0295

Vulnerability from osv_rustsec – Published: 2026-08-12 12:00 – Updated: 2026-09-21 10:08 – Source website
VLAI
Summary
Memory corruption bug on `ApplyResult` type
Details

The ApplyResult type contains a raw pointer to a C++ memory object and has a derived Clone implementation which creates a reference to this object without incrementing the associated reference counter.

As a result, if an instance of ApplyResult is duplicated through Clone and both instances are dropped a use-after-free can occur.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "categories": [
          "memory-corruption"
        ],
        "cvss": null,
        "informational": null
      },
      "ecosystem_specific": {
        "affected_functions": null,
        "affects": {
          "arch": [],
          "functions": [],
          "os": []
        }
      },
      "package": {
        "ecosystem": "crates.io",
        "name": "z3",
        "purl": "pkg:cargo/z3"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0.0.0-0"
            },
            {
              "fixed": "0.21.0"
            }
          ],
          "type": "SEMVER"
        }
      ],
      "versions": []
    }
  ],
  "aliases": [],
  "database_specific": {
    "license": "CC0-1.0"
  },
  "details": "The `ApplyResult` type contains a raw pointer to a C++ memory object and has a derived `Clone` implementation which creates a reference to this object without incrementing the associated reference counter. \n\nAs a result, if an instance of `ApplyResult` is duplicated through `Clone` and both instances are dropped a use-after-free can occur.",
  "id": "RUSTSEC-2026-0295",
  "modified": "2026-09-21T10:08:00Z",
  "published": "2026-08-12T12:00:00Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://crates.io/crates/z3"
    },
    {
      "type": "ADVISORY",
      "url": "https://rustsec.org/advisories/RUSTSEC-2026-0295.html"
    },
    {
      "type": "WEB",
      "url": "https://github.com/prove-rs/z3.rs/pull/578"
    }
  ],
  "related": [],
  "severity": [],
  "summary": "Memory corruption bug on `ApplyResult` type"
}



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