SB2022012050 - Privilege escalation in Linux Kernel eBPF
Published: January 20, 2022 Updated: July 11, 2022
Security Bulletin ID
SB2022012050
Severity
Low
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Security restrictions bypass (CVE-ID: CVE-2022-23222)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to availability of pointer arithmetic via certain *_OR_NULL pointer types in kernel/bpf/verifier.c in the Linux kernel. A local user can run a specially crafted program to execute arbitrary code with root privileges.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.