{"answers":{"affected":"It affects 2 products.","exploited":"There is no known exploitation of CVE-2021-20286 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-20286 is a low-severity denial of service vulnerability in Redhat Enterprise Linux, published on 15 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-20286 and fix it if it is affected.\n\nWhat it is: CVE-2021-20286 is a low-severity denial of service vulnerability in Redhat Enterprise Linux, published on 15 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-20286 in the wild and no public exploit code.\n\nAffected product: Redhat Enterprise Linux. 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-2021-20286/ (Markdown: https://insights.sbomify.com/CVE-2021-20286/index.md)","id":"CVE-2021-20286","markdown":"https://insights.sbomify.com/CVE-2021-20286/index.md","name":"CVE-2021-20286","record":{"aliases":["AZL-7265","DEBIAN-CVE-2021-20286","GHSA-r4rf-vx7w-8692","SUSE-SU-2021:2274-1","UBUNTU-CVE-2021-20286","openSUSE-SU-2021:2274-1","openSUSE-SU-2024:10961-1"],"analysis":{"component_type":"library","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"libnbd library","requires_auth":"high_privilege","summary":"An assertion failure in libnbd allows attackers to cause a denial of service, requiring updates to the library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"enterprise_linux","vendor":"redhat"},{"product":"libnbd","vendor":"redhat"}],"cvss":{"score":2.7,"severity":"low","source":"nvd","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-617","name":"Reachable Assertion"}],"description":"A flaw was found in libnbd 1.7.3. An assertion failure in nbd_unlocked_opt_go in ilb/opt.c may lead to denial of service.","ecosystems":["SUSE:Linux Enterprise Module for Containers 15 SP2","SUSE:Linux Enterprise Module for Containers 15 SP3","openSUSE:Leap 15.3","openSUSE:Tumbleweed"],"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":"Denial of service in libnbd","id":"CVE-2021-20286","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"redhat:enterprise_linux","products":["redhat:enterprise_linux"],"type":"denial_of_service","year":"2021"},"n_packages":5,"n_references":2,"next":{"headline":"DO NOT USE THIS CANDIDATE NUMBER.","id":"CVE-2021-20287"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Module for Containers 15 SP2","fixed":["1.30.0-5.3.2"],"introduced":["0"],"last_affected":[],"package":"containerized-data-importer","purl":"pkg:rpm/suse/containerized-data-importer\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Containers%2015%20SP2","source":"SUSE-SU-2021:2274-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Containers 15 SP2","fixed":["0.40.0-5.11.2"],"introduced":["0"],"last_affected":[],"package":"kubevirt","purl":"pkg:rpm/suse/kubevirt\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Containers%2015%20SP2","source":"SUSE-SU-2021:2274-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Containers 15 SP3","fixed":["0.40.0-5.11.2"],"introduced":["0"],"last_affected":[],"package":"kubevirt","purl":"pkg:rpm/suse/kubevirt\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Containers%2015%20SP3","source":"SUSE-SU-2021:2274-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["0.40.0-5.11.2"],"introduced":["0"],"last_affected":[],"package":"kubevirt","purl":"pkg:rpm/opensuse/kubevirt\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2021:2274-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["1.9.3-1.2"],"introduced":["0"],"last_affected":[],"package":"libnbd","purl":"pkg:rpm/opensuse/libnbd\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:10961-1"}],"prev":{"headline":"Memory corruption in upx","id":"CVE-2021-20285"},"products":["libnbd"],"published":"2021-03-15","related":[{"cvss_score":9.8,"headline":"Red Hat JBoss RichFaces Framework Expression Language Injection","id":"CVE-2018-14667","kev_date_added":"2023-09-28","published":"2018-11-06"},{"cvss_score":9.8,"headline":"Missing fixes for CVE-2021-40438 and CVE-2021-26691 in the versions of httpd, as shipped in Red Hat Enterprise Linux 8.5.0, causes a securit","id":"CVE-2021-20325","kev_date_added":null,"published":"2022-02-18"},{"cvss_score":9.8,"headline":"Memory corruption in libwebp","id":"CVE-2018-25011","kev_date_added":null,"published":"2021-05-21"},{"cvss_score":9.8,"headline":"Other in libwebp","id":"CVE-2018-25014","kev_date_added":null,"published":"2021-05-21"},{"cvss_score":9.8,"headline":"Supply chain in redhat-upgrade-tool","id":"CVE-2014-3585","kev_date_added":null,"published":"2019-11-22"},{"cvss_score":9.3,"headline":"Squid: request/response smuggling in http/1.1 and icap","id":"CVE-2023-46846","kev_date_added":null,"published":"2023-11-03"},{"cvss_score":9.1,"headline":"Memory corruption in libwebp","id":"CVE-2018-25009","kev_date_added":null,"published":"2021-05-21"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"SUSE"},{"class":"attribution","licence":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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 assertion failure in libnbd allows attackers to cause a denial of service, requiring updates to the library.","url":"https://insights.sbomify.com/CVE-2021-20286/"}