Vulnerability
Linux Kernel Privilege Escalation Vulnerability
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.
Apply updates per vendor instructions.
CISA 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.”
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:HLow exploitation likelihood — defer if no other signals fire.
No VEX statements published for CVE-2021-22600. Vendors publish VEX (Vulnerability Exploitability eXchange) to assert per-product whether a CVE is actually exploitable in their distribution.
Active exploitation with limited impact — coordinate patching