CVE-2021-22600
Linux Kernel Privilege Escalation Vulnerability
Summary
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.
Affected software
Vendor: Linux · Product: Kernel
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in Linux
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2026-31431 | Linux Kernel Incorrect Resource Transfer Between Spheres Vulnerability | 94.5% | Yes |
| CVE-2022-0847 | Linux Kernel Privilege Escalation Vulnerability | 88.6% | Yes |
| CVE-2016-5195 | Linux Kernel Race Condition Vulnerability | 83.0% | Yes |
| CVE-2021-22555 | Linux Kernel Heap Out-of-Bounds Write Vulnerability | 78.7% | Yes |
| CVE-2019-13272 | Linux Kernel Improper Privilege Management Vulnerability | 52.2% | Yes |
| CVE-2013-2094 | Linux Kernel Privilege Escalation Vulnerability | 47.7% | Yes |
| CVE-2021-3493 | Linux Kernel Privilege Escalation Vulnerability | 44.0% | Yes |
| CVE-2013-6282 | Linux Kernel Improper Input Validation Vulnerability | 39.7% | Yes |
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