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CVE-2021-22600: Linux Kernel Privilege Escalation Vulnerability
Linux Kernel · in CISA KEV since 2022-04-11
2022-04-11added to KEV
2022-05-02federal remediation due date
6.08%EPSS exploit probability (30 days) 93.1th percentile
7 HIGHCVSS 3.1
Unknownknown ransomware use
75days from NVD publication to KEV
What it is
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.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-415 |
|---|---|
| CVSS vector | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2022-01-26 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2021-22600.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.
Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.