{"id":"CVE-2021-29929","aliases":["EUVD-2021-1900","GHSA-vpw8-43wm-rxw5","RUSTSEC-2021-0039"],"status":"published","title":"Double free in endian_trait","description":"An issue was discovered in the endian_trait crate through 2021-01-04 for Rust. A double drop can occur when a user-provided Endian impl panics.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-10","score":0.01175,"percentile":0.67824,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-415"],"published":"2021-01-04T12:00:00Z","modified":"2026-06-17T03:48:27Z","affected":[{"source":"ghsa","ecosystem":"crates.io","package":"endian_trait","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"0.6.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"endian_trait","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"0.6.0"}]}]},{"source":"osv","ecosystem":"crates.io","package":"endian_trait","ranges":[{"type":"SEMVER","events":[{"introduced":"0.0.0-0"}]}]}],"products":[{"vendor":"endian_trait_project","product":"endian_trait"}],"references":[{"url":"https://rustsec.org/advisories/RUSTSEC-2021-0039.html","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory","web","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29929","tags":["advisory"]},{"url":"https://gitlab.com/myrrlyn/endian_trait/-/issues/1","tags":["web","report"]},{"url":"https://github.com/advisories/GHSA-vpw8-43wm-rxw5"},{"url":"https://gitlab.com/myrrlyn/endian_trait","tags":["package"]},{"url":"https://crates.io/crates/endian_trait","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2021-29929","description":"An issue was discovered in the endian_trait crate through 2021-01-04 for Rust. A double drop can occur when a user-provided Endian impl panics.","status":"published","published":"2021-04-01T04:25:13Z","modified":"2024-08-03T22:18:03.297Z","updated_at":"2026-11-02T14:33:06.32268Z"}],"euvd":[{"id":"EUVD-2021-1900","description":"An issue was discovered in the endian_trait crate through 2021-01-04 for Rust. A double drop can occur when a user-provided Endian impl panics.","status":"published","published":"2021-04-01T04:25:13Z","modified":"2024-08-03T22:18:03Z","updated_at":"2026-11-03T03:24:43.413555Z"}],"ghsa":[{"id":"GHSA-vpw8-43wm-rxw5","title":"Double free in endian_trait","description":"An issue was discovered in the endian_trait crate through 2021-01-04 for Rust. A double drop can occur when a user-provided Endian impl panics.","status":"published","published":"2021-08-25T20:54:06Z","modified":"2023-01-09T05:04:48Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:36:10.502376Z"}],"nvd":[{"id":"CVE-2021-29929","description":"An issue was discovered in the endian_trait crate through 2021-01-04 for Rust. A double drop can occur when a user-provided Endian impl panics.","status":"published","published":"2021-04-01T05:15:14.14Z","modified":"2026-06-17T03:48:27.457Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T14:06:51.197859Z"}],"osv":[{"id":"GHSA-vpw8-43wm-rxw5","title":"Double free in endian_trait","description":"An issue was discovered in the endian_trait crate through 2021-01-04 for Rust. A double drop can occur when a user-provided Endian impl panics.","status":"published","published":"2021-08-25T20:54:06Z","modified":"2023-11-08T04:05:43.576898Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-415"],"updated_at":"2026-11-02T15:46:57.694388Z"},{"id":"RUSTSEC-2021-0039","title":"panic in user-provided `Endian` impl triggers double drop of T","description":"Affected versions of the crate does not guard against panic from user-provided impl of `Endian` trait, which is a safe trait that users can implement.\nIf a user-provided implementation of the `Endian` trait panics, double-drop is triggered due to the duplicated ownership of `T` created by `ptr::read()`.\n\nDouble-drop (or double free) can cause memory corruption in the heap.","status":"published","published":"2021-01-04T12:00:00Z","modified":"2023-11-08T04:05:43.576898Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:39.492624Z"}]}}