{"schema_version":"1","data":[{"id":2637,"advisory_id":"31cf82f9-5e09-4c2e-be07-8f301068ee6a","revision":1,"source_id":"core-kev","source_url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2021-22600","source_published_at":"2022-04-11T00:00:00+00:00","published_at":"2026-10-24T21:22:00.122742+00:00","extraction_method":"structured","technologies":["core-kev","kernel"],"cve_ids":["CVE-2021-22600"],"event_types":["advisory"],"payload":{"kind":"advisory","title":"Linux Kernel Privilege Escalation Vulnerability","summary":"Linux Kernel contains a flaw in the packet socket (AF_PACKET) implementation which could lead to incorrectly freeing memory. A local user could exploit this for denial-of-service (DoS) or possibly for privilege escalation. CISA required action: Apply updates per vendor instructions.","evidence":"kev:CVE-2021-22600","products":[{"name":{"value":"Kernel","evidence":"/product"},"prerequisites":[],"fixed_versions":[],"affected_versions":[]}],"severity":"unknown","structured":{"id":"CVE-2021-22600","aliases":["CVE-2021-22600"],"affected":[],"modified":"2022-04-11T00:00:00.000Z","provider":"kev","references":["https://www.cisa.gov/known-exploited-vulnerabilities-catalog"],"exploitation":{"cwes":["CWE-415"],"cveID":"CVE-2021-22600","notes":"https://nvd.nist.gov/vuln/detail/CVE-2021-22600","dueDate":"2022-05-02","product":"Kernel","dateAdded":"2022-04-11","vendorProject":"Linux","requiredAction":"Apply updates per vendor instructions.","known_exploited":true,"shortDescription":"Linux Kernel contains a flaw in the packet socket (AF_PACKET) implementation which could lead to incorrectly freeing memory. A local user could exploit this for denial-of-service (DoS) or possibly for privilege escalation.","vulnerabilityName":"Linux Kernel Privilege Escalation Vulnerability","knownRansomwareCampaignUse":"Unknown"}},"related_cves":[{"value":"CVE-2021-22600","evidence":"/cveID"}],"security_relevant":true,"severity_evidence":null},"priority":{"reasons":["known_exploited"],"severity":"unknown","linked_cves":[],"fix_available":false,"known_exploited":true,"publisher_severity":"unknown"},"context_update":false}],"next_after":2637,"next_before":2637}