{"id":"GHSA-74r5-g7vc-j2v2","aliases":["RUSTSEC-2024-0346"],"url":"https://o3.security/vulnerability/GHSA-74r5-g7vc-j2v2","summary":"zerovec-derive incorrectly uses `#[repr(packed)]`","details":"The affected versions make unsafe memory accesses under the assumption that `#[repr(packed)]` has a guaranteed field order. \n\nThe Rust specification does not guarantee this, and https://github.com/rust-lang/rust/pull/125360 (1.80.0-beta) starts \nreordering fields of `#[repr(packed)]` structs, leading to illegal memory accesses.\n\nThe patched versions `0.9.7` and `0.10.3` use `#[repr(C, packed)]`, which guarantees field order.\n","published":"2024-07-08T18:39:18Z","modified":"2026-09-10T03:50:16.410729912Z","cvss":{"score":6.2,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"crates.io","name":"zerovec-derive","fixedVersion":"0.10.3"},{"ecosystem":"crates.io","name":"zerovec-derive","fixedVersion":"0.9.7"}],"fix":{"url":"https://github.com/rustsec/advisory-db/pull/2007","label":"rustsec/advisory-db#2007"},"references":[{"type":"WEB","url":"https://github.com/unicode-org/icu4x/issues/5196#issuecomment-2214711069"},{"type":"WEB","url":"https://github.com/rustsec/advisory-db/pull/2007"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2024-0346.html"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-09-10T03:50:16.410729912Z"}}