{"id":"CVE-2020-36311","state":"PUBLISHED","title":"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 ","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.","publishedAt":"2021-04-06T23:28:49.000Z","updatedAt":"2026-10-08T21:03:27.604Z","severity":null,"assigner":"mitre","products":["n/a n/a"],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":["https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03","https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9","https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html","https://www.debian.org/security/2021/dsa-4941"],"weaknesses":[],"ingestedAt":"2026-10-29T19:47:24.909Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/36xxx/CVE-2020-36311.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2020-36311","state":"PUBLISHED","datePublished":"2021-04-06T23:28:49.000Z","dateUpdated":"2026-10-08T21:03:27.604Z","assignerShortName":"mitre","assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","dateReserved":"2021-04-06T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","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."}],"affected":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}],"references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03","tags":["x_refsource_MISC"]},{"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9","tags":["x_refsource_MISC"]},{"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","tags":["mailing-list","x_refsource_MLIST"]},{"url":"https://www.debian.org/security/2021/dsa-4941","name":"DSA-4941","tags":["vendor-advisory","x_refsource_DEBIAN"]}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"shortName":"mitre","dateUpdated":"2021-07-21T00:06:19.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca"},"x_legacyV4Record":{"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":[{"name":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03","refsource":"MISC","url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03"},{"name":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9","refsource":"MISC","url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9"},{"name":"[debian-lts-announce] 20210720 [SECURITY] [DLA 2714-1] linux-4.19 security update","refsource":"MLIST","url":"https://lists.debian.org/debian-lts-announce/2021/07/msg00015.html"},{"name":"DSA-4941","refsource":"DEBIAN","url":"https://www.debian.org/security/2021/dsa-4941"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=7be74942f184fdfba34ddd19a0d995deb34d4a03","tags":["x_refsource_MISC","x_transferred"]},{"url":"https://cdn.kernel.org/pub/linux/kernel/v5.x/ChangeLog-5.9","tags":["x_refsource_MISC","x_transferred"]},{"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","tags":["mailing-list","x_refsource_MLIST","x_transferred"]},{"url":"https://www.debian.org/security/2021/dsa-4941","name":"DSA-4941","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T17:23:10.253Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2020-36311","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2026-10-08T21:00:35.710173Z"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-08T21:03:27.604Z"}}]}}}