{"schema_version":"1","data":[{"id":21639,"advisory_id":"469b4c47-171e-4b26-8ae0-3738ce48ac01","revision":1,"source_id":"core-cve","source_url":"https://www.cve.org/CVERecord?id=CVE-2021-3759","source_published_at":"2022-08-23T00:00:00+00:00","published_at":"2026-10-25T05:48:19.190927+00:00","extraction_method":"structured","technologies":["core-cve","kernel"],"cve_ids":["CVE-2021-3759"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"CVE-2021-3759","summary":"A memory overflow vulnerability was found in the Linux kernel’s ipc functionality of the memcg subsystem, in the way a user calls the semget function multiple times, creating semaphores. This flaw allows a local user to starve the resources, causing a denial of service. The highest threat from this vulnerability is to system availability.","evidence":"cve:CVE-2021-3759","products":[{"name":{"value":"kernel","evidence":"/containers/cna/affected/0/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2021-3759","aliases":["CVE-2021-3759"],"metrics":[],"affected":[{"vendor":"n/a","product":"kernel","versions":[{"status":"affected","version":"Fixed in Linux kernel 5.15-rc1"}]}],"modified":"2026-10-14T09:49:52.088Z","provider":"cve","references":["https://bugzilla.redhat.com/show_bug.cgi?id=1999675","https://access.redhat.com/security/cve/CVE-2021-3759","https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/","https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html"],"provider_metadata":{"adp":[{"title":"CVE Program Container","references":[{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=1999675","tags":["x_transferred"]},{"url":"https://access.redhat.com/security/cve/CVE-2021-3759","tags":["x_transferred"]},{"url":"https://lore.kernel.org/linux-mm/1626333284-1404-1-git-send-email-nglaive%40gmail.com/","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2022/12/msg00031.html","name":"[debian-lts-announce] 20221222 [SECURITY] [DLA 3244-1] linux-5.10 security update","tags":["mailing-list","x_transferred"]}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-03T17:09:08.717Z"}},{"affected":[{"vendor":"Siemens","product":"SIMATIC S7-1500 TM MFP - GNU/Linux subsystem","versions":[{"status":"affected","version":"0","lessThan":"V1.1","versionType":"custom"}],"defaultStatus":"unknown"}],"x_adpType":"supplier","references":[{"url":"https://cert-portal.siemens.com/productcert/html/ssa-794697.html"}],"providerMetadata":{"orgId":"0b142b55-0307-4c5a-b3c9-f314f3fb7c5e","shortName":"siemens-SADP","dateUpdated":"2026-10-14T09:49:52.088Z"}}],"cna":{"orgId":"53f830b8-0a3f-465b-8143-3b8a9948e749","shortName":"redhat","dateUpdated":"2022-12-22T00:00:00.000Z"}}},"related_cves":[{"value":"CVE-2021-3759","evidence":"/cveMetadata/cveId"}],"security_relevant":true,"severity_evidence":null}}],"next_after":21639,"next_before":21639}