{"answers":{"affected":"It affects 3 products.","exploited":"There is no known exploitation of CVE-2021-3997 in the wild and no public exploit code.","fix":"Apply the vendor's patch.","what":"CVE-2021-3997 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 23 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2021-3997 and fix it if it is affected.\n\nWhat it is: CVE-2021-3997 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 23 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2021-3997 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-2021-3997/ (Markdown: https://insights.sbomify.com/CVE-2021-3997/index.md)","id":"CVE-2021-3997","markdown":"https://insights.sbomify.com/CVE-2021-3997/index.md","name":"CVE-2021-3997","record":{"aliases":["AZL-10638","DEBIAN-CVE-2021-3997","GHSA-4p54-q58q-8mpc","MGASA-2022-0016","OESA-2022-1503","SUSE-SU-2022:0043-1","SUSE-SU-2022:0539-1","UBUNTU-CVE-2021-3997","USN-5226-1","openSUSE-SU-2022:0043-1","openSUSE-SU-2022:0539-1","openSUSE-SU-2024:11731-1"],"analysis":{"component_type":"operating_system","fix_type":"patch","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"systemd","requires_auth":"low_privilege","summary":"An attacker can cause a denial of service at boot time by creating excessive nested directories in /tmp, affecting systemd-tmpfiles.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"redhat","cpe":[{"product":"fedora","vendor":"fedoraproject"},{"product":"enterprise_linux","vendor":"redhat"},{"product":"systemd","vendor":"systemd_project"}],"cvss":{"score":5.5,"severity":"medium","source":"nvd","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-674","name":"Uncontrolled Recursion"}],"description":"A flaw was found in systemd. An uncontrolled recursion in systemd-tmpfiles may lead to a denial of service at boot time when too many nested directories are created in /tmp.","ecosystems":["SUSE:Linux Enterprise Micro 5.1","SUSE:Linux Enterprise Module for Basesystem 15 SP3","SUSE:Package Hub 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 systemd","id":"CVE-2021-3997","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":"fedoraproject:fedora","products":["fedoraproject:fedora","redhat:enterprise_linux","systemd_project:systemd"],"type":"denial_of_service","year":"2021"},"n_packages":9,"n_references":5,"next":{"headline":"Information disclosure in glibc","id":"CVE-2021-3998"},"packages":[{"ecosystem":"SUSE:Linux Enterprise Micro 5.1","fixed":["246.16-150300.7.39.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.1","source":"SUSE-SU-2022:0539-1"},{"ecosystem":"SUSE:Linux Enterprise Micro 5.1","fixed":["246.16-7.33.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Micro%205.1","source":"SUSE-SU-2022:0043-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP3","fixed":["246.16-150300.7.39.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3","source":"SUSE-SU-2022:0539-1"},{"ecosystem":"SUSE:Linux Enterprise Module for Basesystem 15 SP3","fixed":["246.16-7.33.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/suse/systemd\u0026distro=SUSE%20Linux%20Enterprise%20Module%20for%20Basesystem%2015%20SP3","source":"SUSE-SU-2022:0043-1"},{"ecosystem":"SUSE:Package Hub 15 SP3","fixed":["1.9.12-bp153.2.6.1"],"introduced":["0"],"last_affected":[],"package":"htmldoc","purl":"pkg:rpm/suse/htmldoc\u0026distro=SUSE%20Package%20Hub%2015%20SP3","source":"openSUSE-SU-2022:0043-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["1.9.12-bp153.2.6.1"],"introduced":["0"],"last_affected":[],"package":"htmldoc","purl":"pkg:rpm/opensuse/htmldoc\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2022:0043-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["246.16-150300.7.39.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/opensuse/systemd\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2022:0539-1"},{"ecosystem":"openSUSE:Leap 15.3","fixed":["246.16-7.33.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/opensuse/systemd\u0026distro=openSUSE%20Leap%2015.3","source":"openSUSE-SU-2022:0043-1"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["249.7-3.1"],"introduced":["0"],"last_affected":[],"package":"systemd","purl":"pkg:rpm/opensuse/systemd\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2024:11731-1"}],"prev":{"headline":"Missing authorization in util-linux","id":"CVE-2021-3996"},"products":["systemd"],"published":"2022-08-23","related":[{"cvss_score":9.8,"headline":"PHP-CGI OS Command Injection","id":"CVE-2024-4577","kev_date_added":"2024-06-12","published":"2024-06-09"},{"cvss_score":9.8,"headline":"Grafana Authentication Bypass","id":"CVE-2021-39226","kev_date_added":"2022-08-25","published":"2021-10-05"},{"cvss_score":9.8,"headline":"VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow","id":"CVE-2019-5544","kev_date_added":"2021-11-03","published":"2019-12-06"},{"cvss_score":9.6,"headline":"Google Chromium V8 Type Confusion","id":"CVE-2024-4947","kev_date_added":"2024-05-20","published":"2024-05-15"},{"cvss_score":9.6,"headline":"Google Chromium Visuals Use-After-Free","id":"CVE-2024-4671","kev_date_added":"2024-05-13","published":"2024-05-09"},{"cvss_score":9.6,"headline":"Google Chromium Mojo Insufficient Data Validation","id":"CVE-2022-3075","kev_date_added":"2022-09-08","published":"2022-09-26"},{"cvss_score":9.6,"headline":"Google Chromium Indexed DB API Use-After-Free","id":"CVE-2021-30633","kev_date_added":"2021-11-03","published":"2021-10-08"}],"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":"2026-10-14","vendors":["n/a"]},"summary":"An attacker can cause a denial of service at boot time by creating excessive nested directories in /tmp, affecting systemd-tmpfiles.","url":"https://insights.sbomify.com/CVE-2021-3997/"}