{"id":"GHSA-9frf-r7c7-j2vg","summary":"Out of bounds write in stackvector","details":"StackVec::extend used the lower and upper bounds from an Iterator's size_hint to determine how many items to push into the stack based vector. If the size_hint implementation returned a lower bound that was larger than the upper bound, StackVec would write out of bounds and overwrite memory on the stack. As mentioned by the size_hint documentation, size_hint is mainly for optimization and incorrect implementations should not lead to memory safety issues.","aliases":["CVE-2021-29939","RUSTSEC-2021-0048"],"modified":"2023-11-08T04:05:44.063920Z","published":"2021-08-25T20:54:14Z","database_specific":{"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2021-08-19T17:15:11Z","nvd_published_at":"2021-04-01T05:15:00Z","cwe_ids":["CWE-787"]},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29939"},{"type":"WEB","url":"https://github.com/Alexhuszagh/rust-stackvector/issues/2"},{"type":"PACKAGE","url":"https://github.com/Alexhuszagh/rust-stackvector"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2021-0048.html"}],"affected":[{"package":{"name":"stackvector","ecosystem":"crates.io","purl":"pkg:cargo/stackvector"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"1.0.9"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2021/08/GHSA-9frf-r7c7-j2vg/GHSA-9frf-r7c7-j2vg.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L"}]}