{"id":"CVE-2021-22600","url":"https://www.cyber-defence.io/tools/cve/CVE-2021-22600","generatedAt":"2026-10-31T12:57:08.680Z","title":"Linux Kernel Privilege Escalation Vulnerability","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","published":"2022-01-26T14:15:08.000Z","lastModified":"2026-06-17T03:37:27.000Z","status":"Analyzed","sourceIdentifier":"cve-coordination@google.com","cvss":{"version":"3.1","score":7,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-415"],"affected":["netapp/8300 firmware","netapp/8700 firmware","netapp/a400 firmware","netapp/c400 firmware","linux/linux kernel","debian/debian linux","netapp/h410c firmware","netapp/h300s firmware","netapp/h500s firmware","netapp/h700s firmware","netapp/h410s firmware"],"epss":{"score":0.06586,"percentile":0.93829,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2022-04-11","dueDate":"2022-05-02","knownRansomwareCampaignUse":"Unknown","notes":"Apply updates per vendor instructions.\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-22600"},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 2 May 2022). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755","tags":["Mailing List","Patch"],"source":"cve-coordination@google.com"},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html","tags":["Mailing List","Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"https://security.netapp.com/advisory/ntap-20230110-0002/","tags":["Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"https://www.debian.org/security/2022/dsa-5096","tags":["Third Party Advisory"],"source":"cve-coordination@google.com"},{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=ec6af094ea28f0f2dda1a6a33b14cd57e36a9755","tags":["Mailing List","Patch"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html","tags":["Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://security.netapp.com/advisory/ntap-20230110-0002/","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.debian.org/security/2022/dsa-5096","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-22600","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2021-22600","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}