{"cve_id":"CVE-2021-22600","published":"2022-01-26T14:15:08.123000+00:00","last_modified":"2026-06-17T03:37:27.450000+00:00","vuln_status":"Analyzed","description":"A double free bug in packet_set_ring() in net/packet/af_packet.c can be exploited by a local user through crafted syscalls to escalate privileges or deny service. We recommend upgrading kernel past the effected versions or rebuilding past ec6af094ea28f0f2dda1a6a33b14cd57e36a9755","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","base_score":7.0,"base_severity":"HIGH","attack_vector":"LOCAL","privileges_req":"LOW","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-415"],"in_kev":true,"kev_date_added":"2022-04-11","kev_ransomware":false,"epss_score":0.06586,"epss_percentile":0.93841,"cap_rule_version":"0.1.1","stage":"EXECUTION","req_access":"USER","req_vector":"LOCAL","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T09:56:29.213229+00:00","first_seen":"2022-01-26T14:15:08.123000+00:00","kev_first_seen":"2022-04-11T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["debian","linux","netapp"],"products":["8300","8300_firmware","8700","8700_firmware","a400","a400_firmware","c400","c400_firmware","debian_linux","h300s","h300s_firmware","h410c","h410c_firmware","h410s","h410s_firmware","h500s","h500s_firmware","h700s","h700s_firmware","linux_kernel"],"affected":[{"vendor":"debian","product":"debian_linux","ranges":["10.0","9.0"]},{"vendor":"linux","product":"linux_kernel","ranges":["≥ 4.19.114 and < 4.19.222","≥ 4.14.175 and < 4.14.259","≥ 5.11 and < 5.15.11","≥ 5.5.14 and < 5.10.88","≥ 5.4.29 and < 5.4.168"]},{"vendor":"netapp","product":"8300_firmware","ranges":["all versions"]},{"vendor":"netapp","product":"8700_firmware","ranges":["all versions"]},{"vendor":"netapp","product":"a400_firmware","ranges":["all versions"]},{"vendor":"netapp","product":"c400_firmware","ranges":["all versions"]},{"vendor":"netapp","product":"h300s_firmware","ranges":["all versions"]},{"vendor":"netapp","product":"h410c_firmware","ranges":["all versions"]},{"vendor":"netapp","product":"h410s_firmware","ranges":["all versions"]},{"vendor":"netapp","product":"h500s_firmware","ranges":["all versions"]},{"vendor":"netapp","product":"h700s_firmware","ranges":["all versions"]}]}