{"answers":{"affected":"9 open source packages ship an affected version, including tokio. It affects 1 product.","exploited":"There is no known exploitation of CVE-2021-38191 in the wild and no public exploit code.","fix":"Upgrade tokio to a fixed version for your release line: 1.5.1, 1.6.3, 1.7.2 or 1.8.1.","what":"CVE-2021-38191 is a medium-severity vulnerability in n/a, published on 8 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-38191 and fix it if it is affected.\n\nWhat it is: CVE-2021-38191 is a medium-severity vulnerability in n/a, published on 8 Aug 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-38191 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- tokio (crates.io): affected from 0.3.0; fixed in 1.5.1, 1.6.3, 1.7.2, 1.8.1\n- tokio (crates.io): affected from 0.3.0; fixed in 1.5.1\n- tokio (crates.io): affected from 0.3.0; fixed in 1.5.1\n- tokio (crates.io): affected from 1.6.0; fixed in 1.6.3\n- tokio (crates.io): affected from 1.6.0; fixed in 1.6.3\n- tokio (crates.io): affected from 1.7.0; fixed in 1.7.2\n- tokio (crates.io): affected from 1.7.0; fixed in 1.7.2\n- tokio (crates.io): affected from 1.8.0; fixed in 1.8.1\n- tokio (crates.io): affected from 1.8.0; fixed in 1.8.1\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-2021-38191/ (Markdown: https://insights.sbomify.com/CVE-2021-38191/index.md)","id":"CVE-2021-38191","markdown":"https://insights.sbomify.com/CVE-2021-38191/index.md","name":"CVE-2021-38191","record":{"aliases":["GHSA-2grh-hm3w-w7hv","RUSTSEC-2021-0072"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Rust tokio crate","requires_auth":"none","summary":"A race condition in the tokio crate allows tasks to be dropped on the wrong thread, potentially causing crashes or denial of service.","user_interaction":"not_required","vuln_class":"race_condition"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"tokio","vendor":"tokio"}],"cvss":{"score":5.9,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-362","name":"Concurrent Execution using Shared Resource with Improper Synchronization"}],"description":"An issue was discovered in the tokio crate before 1.8.1 for Rust. Upon a JoinHandle::abort, a Task may be dropped in the wrong thread.","ecosystems":["crates.io"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Race condition in tokio","id":"CVE-2021-38191","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"crates.io","product":null,"products":[],"type":"race_condition","year":"2021"},"n_packages":9,"n_references":2,"next":{"headline":"Overflow in prost-types","id":"CVE-2021-38192"},"packages":[{"ecosystem":"crates.io","fixed":["1.5.1","1.6.3","1.7.2","1.8.1"],"introduced":["0.3.0","1.6.0","1.7.0","1.8.0"],"last_affected":[],"package":"tokio","purl":"pkg:cargo/tokio","source":"RUSTSEC-2021-0072"},{"ecosystem":"crates.io","fixed":["1.5.1"],"introduced":["0.3.0"],"last_affected":[],"package":"tokio","purl":null,"source":"GHSA-2grh-hm3w-w7hv"},{"ecosystem":"crates.io","fixed":["1.5.1"],"introduced":["0.3.0"],"last_affected":[],"package":"tokio","purl":"pkg:cargo/tokio","source":"GHSA-2grh-hm3w-w7hv"},{"ecosystem":"crates.io","fixed":["1.6.3"],"introduced":["1.6.0"],"last_affected":[],"package":"tokio","purl":null,"source":"GHSA-2grh-hm3w-w7hv"},{"ecosystem":"crates.io","fixed":["1.6.3"],"introduced":["1.6.0"],"last_affected":[],"package":"tokio","purl":"pkg:cargo/tokio","source":"GHSA-2grh-hm3w-w7hv"},{"ecosystem":"crates.io","fixed":["1.7.2"],"introduced":["1.7.0"],"last_affected":[],"package":"tokio","purl":null,"source":"GHSA-2grh-hm3w-w7hv"},{"ecosystem":"crates.io","fixed":["1.7.2"],"introduced":["1.7.0"],"last_affected":[],"package":"tokio","purl":"pkg:cargo/tokio","source":"GHSA-2grh-hm3w-w7hv"},{"ecosystem":"crates.io","fixed":["1.8.1"],"introduced":["1.8.0"],"last_affected":[],"package":"tokio","purl":null,"source":"GHSA-2grh-hm3w-w7hv"},{"ecosystem":"crates.io","fixed":["1.8.1"],"introduced":["1.8.0"],"last_affected":[],"package":"tokio","purl":"pkg:cargo/tokio","source":"GHSA-2grh-hm3w-w7hv"}],"prev":{"headline":"Out of bounds write in nalgebra","id":"CVE-2021-38190"},"products":["n/a"],"published":"2021-08-08","related":[{"cvss_score":8.1,"headline":"Race Condition in tokio","id":"CVE-2021-45710","kev_date_added":null,"published":"2021-12-26"},{"cvss_score":5.4,"headline":"Tokio's reject_remote_clients configuration may get dropped when creating a Windows named pipe","id":"CVE-2023-22466","kev_date_added":null,"published":"2023-01-04"}],"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":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-04","vendors":["n/a"]},"summary":"A race condition in the tokio crate allows tasks to be dropped on the wrong thread, potentially causing crashes or denial of service.","url":"https://insights.sbomify.com/CVE-2021-38191/"}