{"answers":{"affected":"3 open source packages ship an affected version, including crossbeam-utils. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-23639 exists.","fix":"Upgrade crossbeam-utils to 0.8.7 or later.","what":"CVE-2022-23639 is a high-severity vulnerability in crossbeam-rs crossbeam, published on 15 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2022-23639 and fix it if it is affected.\n\nWhat it is: CVE-2022-23639 is a high-severity vulnerability in crossbeam-rs crossbeam, published on 15 Feb 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-23639 exists.\n\nAffected packages and fixed versions:\n- crossbeam-utils (crates.io): affected all versions; fixed in 0.8.7\n- crossbeam-utils (crates.io): affected all versions; fixed in 0.8.7\n- crossbeam-utils (crates.io): affected from 0.0.0-0; fixed in 0.8.7\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2022-23639/ (Markdown: https://insights.sbomify.com/CVE-2022-23639/index.md)","id":"CVE-2022-23639","markdown":"https://insights.sbomify.com/CVE-2022-23639/index.md","name":"CVE-2022-23639","record":{"aliases":["AZL-41454","AZL-44763","AZL-61381","DEBIAN-CVE-2022-23639","GHSA-qc84-gqf4-9926","RUSTSEC-2022-0041","UBUNTU-CVE-2022-23639"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read","data_modify"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust concurrency library","requires_auth":"none","summary":"A race condition in crossbeam-utils on 32-bit targets allows unaligned memory accesses, potentially leading to data corruption or disclosure.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"crossbeam","vendor":"crossbeam_project"}],"cvss":{"score":8.1,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"description":"crossbeam-utils provides atomics, synchronization primitives, scoped threads, and other utilities for concurrent programming in Rust. crossbeam-utils prior to version 0.8.7 incorrectly assumed that the alignment of `{i,u}64` was always the same as `Atomic{I,U}64`. However, the alignment of `{i,u}64` on a 32-bit target can be smaller than `Atomic{I,U}64`. This can cause unaligned memory accesses and data race. Crates using `fetch_*` methods with `AtomicCell\u003c{i,u}64\u003e` are affected by this issue. 32-bit targets without `Atomic{I,U}64` and 64-bit targets are not affected by this issue. This has been fixed in crossbeam-utils 0.8.7. There are currently no known workarounds.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"Improper Restriction of Operations within the Bounds of a Memory Buffer and Race Condition in crossbeam-utils","id":"CVE-2022-23639","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"race_condition","year":"2022"},"n_packages":3,"n_references":3,"next":{"headline":"Improper Restriction of XML External Entity Reference in Excel-Streaming-Reader","id":"CVE-2022-23640"},"packages":[{"ecosystem":"crates.io","fixed":["0.8.7"],"introduced":["0"],"last_affected":[],"package":"crossbeam-utils","purl":null,"source":"GHSA-qc84-gqf4-9926"},{"ecosystem":"crates.io","fixed":["0.8.7"],"introduced":["0"],"last_affected":[],"package":"crossbeam-utils","purl":"pkg:cargo/crossbeam-utils","source":"GHSA-qc84-gqf4-9926"},{"ecosystem":"crates.io","fixed":["0.8.7"],"introduced":["0.0.0-0"],"last_affected":[],"package":"crossbeam-utils","purl":"pkg:cargo/crossbeam-utils","source":"RUSTSEC-2022-0041"}],"prev":{"headline":"Cross-site Scripting in svg-sanitizer","id":"CVE-2022-23638"},"products":["crossbeam"],"published":"2022-02-15","related":[{"cvss_score":9.8,"headline":"Data race in crossbeam-deque","id":"CVE-2021-32810","kev_date_added":null,"published":"2021-08-02"},{"cvss_score":9.8,"headline":"Double free in crossbeam","id":"CVE-2018-20996","kev_date_added":null,"published":"2019-08-26"},{"cvss_score":8.1,"headline":"Undefined Behavior in bounded Crossbeam channel","id":"CVE-2020-15254","kev_date_added":null,"published":"2020-10-16"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"open","licence":"CC0 1.0","name":"RustSec","prefix":"RUSTSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2025-04-22","vendors":["crossbeam-rs"]},"summary":"A race condition in crossbeam-utils on 32-bit targets allows unaligned memory accesses, potentially leading to data corruption or disclosure.","url":"https://insights.sbomify.com/CVE-2022-23639/"}