{"api_version":"1","generated_at":"2026-05-13T07:41:53+00:00","cve":"CVE-2020-36311","urls":{"html":"https://cve.report/CVE-2020-36311","api":"https://cve.report/api/cve/CVE-2020-36311.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2020-36311","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2020-36311"},"summary":{"title":"CVE-2020-36311","description":"An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2021-04-07 00:15:00","updated_at":"2022-05-03 13:05:00"},"problem_types":["NVD-CWE-noinfo"],"metrics":[],"references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03","name":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03","refsource":"MISC","tags":[],"title":"kernel/git/torvalds/linux.git - Linux kernel source tree","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9","name":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9","refsource":"MISC","tags":[],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"200"},{"url":"https://www.debian.org/security/2021/dsa-4941","name":"DSA-4941","refsource":"DEBIAN","tags":[],"title":"Debian -- Security Information -- DSA-4941-1 linux","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html","name":"[debian-lts-announce] 20210720 [SECURITY] [DLA 2714-1] linux-4.19 security update","refsource":"MLIST","tags":[],"title":"[SECURITY] [DLA 2714-1] linux-4.19 security update","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-36311","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-36311","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2020","cve_id":"36311","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"10.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"36311","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"debian","cpe5":"debian_linux","cpe6":"9.0","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2020","cve_id":"36311","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-2020-36311","qid":"159393","title":"Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel (ELSA-2021-9450)"},{"cve":"CVE-2020-36311","qid":"159394","title":"Oracle Enterprise Linux Security Update for Unbreakable Enterprise kernel-container (ELSA-2021-9451)"},{"cve":"CVE-2020-36311","qid":"174916","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1210-1)"},{"cve":"CVE-2020-36311","qid":"174917","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1211-1)"},{"cve":"CVE-2020-36311","qid":"174919","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1238-1)"},{"cve":"CVE-2020-36311","qid":"174925","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1248-1)"},{"cve":"CVE-2020-36311","qid":"174938","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1301-1)"},{"cve":"CVE-2020-36311","qid":"178710","title":"Debian Security Update for linux (DSA 4941-1)"},{"cve":"CVE-2020-36311","qid":"178713","title":"Debian Security Update for linux-4.19 (DLA 2714-1)"},{"cve":"CVE-2020-36311","qid":"198487","title":"Ubuntu Security Notification for Linux kernel Vulnerabilities (USN-5071-1)"},{"cve":"CVE-2020-36311","qid":"198502","title":"Ubuntu Security Notification for Linux kernel (HWE) Vulnerabilities (USN-5071-2)"},{"cve":"CVE-2020-36311","qid":"198548","title":"Ubuntu Security Notification for Linux kernel (Azure) Vulnerabilities (USN-5120-1)"},{"cve":"CVE-2020-36311","qid":"353145","title":"Amazon Linux Security Advisory for kernel : ALAS2KERNEL-5.4-2022-006"},{"cve":"CVE-2020-36311","qid":"670416","title":"EulerOS Security Update for kernel (EulerOS-SA-2021-1983)"},{"cve":"CVE-2020-36311","qid":"670449","title":"EulerOS Security Update for kernel (EulerOS-SA-2021-2051)"},{"cve":"CVE-2020-36311","qid":"670514","title":"EulerOS Security Update for kernel (EulerOS-SA-2021-2272)"},{"cve":"CVE-2020-36311","qid":"750004","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1573-1)"},{"cve":"CVE-2020-36311","qid":"750006","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1596-1)"},{"cve":"CVE-2020-36311","qid":"750015","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1624-1)"},{"cve":"CVE-2020-36311","qid":"750199","title":"OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0758-1)"},{"cve":"CVE-2020-36311","qid":"750261","title":"OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:0579-1)"},{"cve":"CVE-2020-36311","qid":"750650","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1975-1)"},{"cve":"CVE-2020-36311","qid":"750652","title":"SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2021:1977-1)"},{"cve":"CVE-2020-36311","qid":"750762","title":"OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1977-1)"},{"cve":"CVE-2020-36311","qid":"750766","title":"OpenSUSE Security Update for the Linux Kernel (openSUSE-SU-2021:1975-1)"}]},"source_records":{"cve_program":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2020-36311","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 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03","refsource":"MISC","name":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03"},{"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9","refsource":"MISC","name":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9"},{"refsource":"MLIST","name":"[debian-lts-announce] 20210720 [SECURITY] [DLA 2714-1] linux-4.19 security update","url":"https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html"},{"refsource":"DEBIAN","name":"DSA-4941","url":"https://www.debian.org/security/2021/dsa-4941"}]}},"nvd":{"publishedDate":"2021-04-07 00:15:00","lastModifiedDate":"2022-05-03 13:05:00","problem_types":["NVD-CWE-noinfo"],"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:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"5.9.0","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2020","CveId":"36311","Ordinal":"205426","Title":"CVE-2020-36311","CVE":"CVE-2020-36311","Year":"2020"},"notes":[{"CveYear":"2020","CveId":"36311","Ordinal":"1","NoteData":"An issue was discovered in the Linux kernel before 5.9. arch/x86/kvm/svm/sev.c allows attackers to cause a denial of service (soft lockup) by triggering destruction of a large SEV VM (which requires unregistering many encrypted regions), aka CID-7be74942f184.","Type":"Description","Title":null},{"CveYear":"2020","CveId":"36311","Ordinal":"2","NoteData":"2021-04-06","Type":"Other","Title":"Published"},{"CveYear":"2020","CveId":"36311","Ordinal":"3","NoteData":"2021-07-20","Type":"Other","Title":"Modified"}]}}}