{"api_version":"1","generated_at":"2026-04-22T23:31:08+00:00","cve":"CVE-2021-44647","urls":{"html":"https://cve.report/CVE-2021-44647","api":"https://cve.report/api/cve/CVE-2021-44647.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2021-44647","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-44647"},"summary":{"title":"CVE-2021-44647","description":"Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2022-01-11 13:15:00","updated_at":"2023-11-07 03:39:00"},"problem_types":["CWE-843"],"metrics":[],"references":[{"url":"https://security.gentoo.org/glsa/202305-23","name":"GLSA-202305-23","refsource":"GENTOO","tags":[],"title":"Lua: Multiple Vulnerabilities (GLSA 202305-23) — Gentoo security","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F/","name":"FEDORA-2022-473560d1a6","refsource":"FEDORA","tags":["Mailing List","Third Party Advisory"],"title":"[SECURITY] Fedora 34 Update: lua-5.4.4-1.fc34 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"http://lua-users.org/lists/lua-l/2021-11/msg00204.html","name":"http://lua-users.org/lists/lua-l/2021-11/msg00204.html","refsource":"MISC","tags":[],"title":"Re: Crash : SEGV that occurs during error handling that occurs in the __close metamethod of to-be-closed after calling os.exit","mime":"text/x-diff","httpstatus":"200","archivestatus":"404"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F/","name":"FEDORA-2022-473560d1a6","refsource":"","tags":[],"title":"[SECURITY] Fedora 34 Update: lua-5.4.4-1.fc34 - package-announce - Fedora Mailing-Lists","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://lua-users.org/lists/lua-l/2021-11/msg00195.html","name":"http://lua-users.org/lists/lua-l/2021-11/msg00195.html","refsource":"MISC","tags":[],"title":"Crash : SEGV that occurs during error handling that occurs in the __close metamethod of to-be-closed after calling os.exit","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://access.redhat.com/security/cve/cve-2021-44647","name":"https://access.redhat.com/security/cve/cve-2021-44647","refsource":"MISC","tags":[],"title":"Red Hat Customer Portal - Access to 24x7 support and knowledge","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2021-44647","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-44647","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2021","cve_id":"44647","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"fedoraproject","cpe5":"fedora","cpe6":"34","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"44647","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"lua","cpe5":"lua","cpe6":"5.4.2","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"44647","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"lua","cpe5":"lua","cpe6":"5.4.3","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2021","cve_id":"44647","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"a","cpe4":"lua","cpe5":"lua","cpe6":"5.4.4","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2021-44647","qid":"183165","title":"Debian Security Update for lua5.4 (CVE-2021-44647)"},{"cve":"CVE-2021-44647","qid":"282304","title":"Fedora Security Update for lua (FEDORA-2022-93f064549c)"},{"cve":"CVE-2021-44647","qid":"282405","title":"Fedora Security Update for lua (FEDORA-2022-473560d1a6)"},{"cve":"CVE-2021-44647","qid":"354467","title":"Amazon Linux Security Advisory for lua : ALAS2022-2022-031"},{"cve":"CVE-2021-44647","qid":"354526","title":"Amazon Linux Security Advisory for lua : ALAS2022-2022-176"},{"cve":"CVE-2021-44647","qid":"710717","title":"Gentoo Linux Lua Multiple Vulnerabilities (GLSA 202305-23)"},{"cve":"CVE-2021-44647","qid":"901168","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for lua (9317)"},{"cve":"CVE-2021-44647","qid":"902291","title":"Common Base Linux Mariner (CBL-Mariner) Security Update for lua (9317-1)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2021-44647","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Lua v5.4.3 and above are affected by SEGV by type confusion in funcnamefromcode function in ldebug.c which can cause a local denial of service."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"http://lua-users.org/lists/lua-l/2021-11/msg00195.html","refsource":"MISC","name":"http://lua-users.org/lists/lua-l/2021-11/msg00195.html"},{"url":"http://lua-users.org/lists/lua-l/2021-11/msg00204.html","refsource":"MISC","name":"http://lua-users.org/lists/lua-l/2021-11/msg00204.html"},{"refsource":"FEDORA","name":"FEDORA-2022-473560d1a6","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3EMGAQ5Y6GXJLY4K5DUOOEQT4MZ4J4F/"},{"refsource":"MISC","name":"https://access.redhat.com/security/cve/cve-2021-44647","url":"https://access.redhat.com/security/cve/cve-2021-44647"},{"refsource":"GENTOO","name":"GLSA-202305-23","url":"https://security.gentoo.org/glsa/202305-23"}]}},"nvd":{"publishedDate":"2022-01-11 13:15:00","lastModifiedDate":"2023-11-07 03:39:00","problem_types":["CWE-843"],"metrics":{"baseMetricV3":{"cvssV3":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":5.5,"baseSeverity":"MEDIUM"},"exploitabilityScore":1.8,"impactScore":3.6},"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:L/AC:L/Au:N/C:N/I:N/A:P","accessVector":"LOCAL","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"PARTIAL","baseScore":2.1},"severity":"LOW","exploitabilityScore":3.9,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:lua:lua:5.4.3:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2021","CveId":"44647","Ordinal":"222438","Title":"CVE-2021-44647","CVE":"CVE-2021-44647","Year":"2021"},"notes":[]}}}