{"id":"CVE-2021-28878","details":"In the standard library in Rust before 1.52.0, the Zip implementation calls __iterator_get_unchecked() more than once for the same index (under certain conditions) when next_back() and next() are used together. This bug could lead to a memory safety violation due to an unmet safety requirement for the TrustedRandomAccess trait.","modified":"2026-04-09T07:40:18.940913Z","published":"2021-04-11T20:15:12.813Z","related":["MGASA-2021-0251"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CZ337CM4GFJLRDFVQCGC7J25V65JXOG5/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TFUO3URYCO73D2Q4WYJBWAMJWGGVXQO4/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VZG65GUW6Z2CYOQHF7T3TB5CZKIX6ZJE/"},{"type":"ADVISORY","url":"https://security.gentoo.org/glsa/202210-09"},{"type":"REPORT","url":"https://github.com/rust-lang/rust/issues/82291"},{"type":"FIX","url":"https://github.com/rust-lang/rust/pull/82292"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/rust-lang/rust","events":[{"introduced":"0"},{"fixed":"88f19c6dab716c6281af7602e30f413e809c5974"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"1.52.0"}]}}],"versions":["0.1","0.2","0.4","0.5","0.6","0.7","0.8","0.9","1.0.0-alpha","1.0.0-alpha.2","1.0.0-beta","release-0.1","release-0.2","release-0.4","release-0.5","release-0.6","release-0.7"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-28878.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"32"}]},{"events":[{"introduced":"0"},{"last_affected":"33"}]},{"events":[{"introduced":"0"},{"last_affected":"34"}]}]}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}