April 11, 2022 · Applied Cybernetics Group
CVE-2021-22600 — Linux Kernel
Linux Kernel Privilege Escalation Vulnerability
- Added to KEV
2022-04-11- Federal due date
2022-05-02- Vendor
- Linux
- Product
- Kernel
- EPSS
- 39.2th percentile (score 0.002, as of
2026-06-08) - NVD CVSS v3.1
- —
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-22600
CISA short description
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
Apply updates per vendor instructions.