{"cve":"CVE-2021-29938","nvd":{"published":"2021-04-01T05:15:14.780","modified":"2026-06-17T03:48:28.560","status":"Modified","description":"An issue was discovered in the slice-deque crate through 2021-02-19 for Rust. A double drop can occur in SliceDeque::drain_filter upon a panic in a predicate function.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-415"],"references":["https://rustsec.org/advisories/RUSTSEC-2021-0047.html","https://rustsec.org/advisories/RUSTSEC-2021-0047.html"],"products":["slice-deque_project:slice-deque"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-29938","score":0.01175,"percentile":0.67574,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-p9gf-gmfv-398m","url":"https://osv.dev/vulnerability/GHSA-p9gf-gmfv-398m","summary":"Double free in slice-deque","modified":"2023-11-08T04:05:44.001761Z","packages":[{"ecosystem":"crates.io","name":"slice-deque","purl":"pkg:cargo/slice-deque","ranges":["<=0.3.0"],"fixed":[]}]},{"id":"RUSTSEC-2021-0047","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0047","summary":"SliceDeque::drain_filter can double drop an element if the predicate panics","modified":"2023-11-08T04:05:44.001761Z","packages":[{"ecosystem":"crates.io","name":"slice-deque","purl":"pkg:cargo/slice-deque","ranges":[">=0.0.0-0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}