{"answers":{"affected":"It affects 4 products.","exploited":"There is no known exploitation of CVE-2021-3839 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-3839 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 23 Aug 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-2021-3839 and fix it if it is affected.\n\nWhat it is: CVE-2021-3839 is a high-severity memory corruption vulnerability in Fedoraproject Fedora, published on 23 Aug 2022. 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-2021-3839 in the wild and no public exploit code.\n\nAffected product: Fedoraproject Fedora. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2021-3839/ (Markdown: https://insights.sbomify.com/CVE-2021-3839/index.md)","id":"CVE-2021-3839","markdown":"https://insights.sbomify.com/CVE-2021-3839/index.md","name":"CVE-2021-3839","record":{"aliases":["DEBIAN-CVE-2021-3839","GHSA-c4mq-4x72-rfxj","UBUNTU-CVE-2021-3839"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"DPDK vhost library","requires_auth":"none","summary":"An out-of-bounds memory access flaw in the DPDK vhost library allows attackers to cause a denial of service via crash.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"data_plane_development_kit","vendor":"dpdk"},{"product":"fedora","vendor":"fedoraproject"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"enterprise_linux_fast_datapath","vendor":"redhat"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"A flaw was found in the vhost library in DPDK. Function vhost_user_set_inflight_fd() does not validate `msg-\u003epayload.inflight.num_queues`, possibly causing out-of-bounds memory read/write. Any software using DPDK vhost library may crash as a result of this vulnerability.","ecosystems":[],"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":"Memory corruption in dpdk","id":"CVE-2021-3839","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","redhat:enterprise_linux"],"type":"memory_corruption","year":"2021"},"n_packages":0,"n_references":3,"next":{"headline":"Antilles Dependency Confusion Vulnerability","id":"CVE-2021-3840"},"packages":[],"prev":{"headline":"PHAR Deserialization in dompdf/dompdf","id":"CVE-2021-3838"},"products":["dpdk"],"published":"2022-08-23","related":[{"cvss_score":7.7,"headline":"Null dereference in dpdk","id":"CVE-2020-10725","kev_date_added":null,"published":"2020-05-20"},{"cvss_score":7.5,"headline":"Denial of service in dpdk","id":"CVE-2019-14818","kev_date_added":null,"published":"2019-11-14"},{"cvss_score":6.5,"headline":"Denial of service in DPDK","id":"CVE-2022-0669","kev_date_added":null,"published":"2022-08-29"},{"cvss_score":6,"headline":"Denial of service in dpdk","id":"CVE-2020-10726","kev_date_added":null,"published":"2020-05-20"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2024-08-03","vendors":["n/a"]},"summary":"An out-of-bounds memory access flaw in the DPDK vhost library allows attackers to cause a denial of service via crash.","url":"https://insights.sbomify.com/CVE-2021-3839/"}