{"api_version":"1","generated_at":"2026-04-23T00:17:14+00:00","cve":"CVE-2020-36691","urls":{"html":"https://cve.report/CVE-2020-36691","api":"https://cve.report/api/cve/CVE-2020-36691.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-36691","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-36691"},"summary":{"title":"CVE-2020-36691","description":"An issue was discovered in the Linux kernel before 5.8. lib/nlattr.c allows attackers to cause a denial of service (unbounded recursion) via a nested Netlink policy with a back reference.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2023-03-24 17:15:00","updated_at":"2023-03-29 12:58:00"},"problem_types":["CWE-674"],"metrics":[],"references":[{"url":"https://github.com/torvalds/linux/commit/7690aa1cdf7c4565ad6b013b324c28b685505e24","name":"https://github.com/torvalds/linux/commit/7690aa1cdf7c4565ad6b013b324c28b685505e24","refsource":"MISC","tags":[],"title":"netlink: limit recursion depth in policy validation · torvalds/linux@7690aa1 · GitHub","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8","name":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8","refsource":"MISC","tags":[],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-36691","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36691","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"36691","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[{"cve":"CVE-2020-36691","qid":"199650","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6284-1)"},{"cve":"CVE-2020-36691","qid":"199669","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-6301-1)"},{"cve":"CVE-2020-36691","qid":"753980","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2151-1)"},{"cve":"CVE-2020-36691","qid":"753981","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2146-1)"},{"cve":"CVE-2020-36691","qid":"753982","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2148-1)"},{"cve":"CVE-2020-36691","qid":"753985","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2162-1)"},{"cve":"CVE-2020-36691","qid":"754005","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2163-1)"},{"cve":"CVE-2020-36691","qid":"754023","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2023:2232-1)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2020-36691","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":"An issue was discovered in the Linux kernel before 5.8. lib/nlattr.c allows attackers to cause a denial of service (unbounded recursion) via a nested Netlink policy with a back reference."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8","refsource":"MISC","name":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.8"},{"url":"https://github.com/torvalds/linux/commit/7690aa1cdf7c4565ad6b013b324c28b685505e24","refsource":"MISC","name":"https://github.com/torvalds/linux/commit/7690aa1cdf7c4565ad6b013b324c28b685505e24"}]}},"nvd":{"publishedDate":"2023-03-24 17:15:00","lastModifiedDate":"2023-03-29 12:58:00","problem_types":["CWE-674"],"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}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.8","cpe_name":[]}]}]}},"legacy_mitre":{"record":null,"notes":[]}}}