{"cve":"CVE-2021-32810","nvd":{"published":"2021-08-02T19:15:08.280","modified":"2026-06-17T03:53:40.593","status":"Modified","description":"crossbeam-deque is a package of work-stealing deques for building task schedulers when programming in Rust. In versions prior to 0.7.4 and 0.8.0, the result of the race condition is that one or more tasks in the worker queue can be popped twice instead of other tasks that are forgotten and never popped. If tasks are allocated on the heap, this can cause double free and a memory leak. If not, this still can cause a logical bug. Crates using `Stealer::steal`, `Stealer::steal_batch`, or `Stealer::steal_batch_and_pop` are affected by this issue. This has been fixed in crossbeam-deque 0.8.1 and 0.7.4.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-362"],"references":["https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-pqqp-xmhj-wgcw","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EZILHZDRGDPOBQ4KTW3E5PPMKLHGH5N/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AWHNNBJCU4EHA2X5ZAMJMGLDUYS5FEPP/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AYBSLIYFANZLCYWOGTIYZUM26TJRH7WU/","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CY5T3FCE4MUYSPKEWICLVJBBODGJ6SZE/"],"products":["crossbeam_project:crossbeam","fedoraproject:fedora"],"source":"nvd","synced_at":"2026-10-19T21:21:13.713336758+00:00"},"epss":{"cve":"CVE-2021-32810","score":0.01907,"percentile":0.79759,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-pqqp-xmhj-wgcw","url":"https://osv.dev/vulnerability/GHSA-pqqp-xmhj-wgcw","summary":"crossbeam-deque Data Race before v0.7.4 and v0.8.1","modified":"2026-07-08T06:28:54.038210538Z","packages":[{"ecosystem":"crates.io","name":"crossbeam-deque","purl":"pkg:cargo/crossbeam-deque","ranges":["<0.7.4"],"fixed":["0.7.4"]},{"ecosystem":"crates.io","name":"crossbeam-deque","purl":"pkg:cargo/crossbeam-deque","ranges":[">=0.8.0 <0.8.1"],"fixed":["0.8.1"]}]},{"id":"RUSTSEC-2021-0093","url":"https://osv.dev/vulnerability/RUSTSEC-2021-0093","summary":"Data race in crossbeam-deque","modified":"2026-10-12T18:00:03.406312219Z","packages":[{"ecosystem":"crates.io","name":"crossbeam-deque","purl":"pkg:cargo/crossbeam-deque","ranges":[">=0.0.0-0 <0.7.4",">=0.8.0 <0.8.1"],"fixed":["0.7.4","0.8.1"]}]}],"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."]}