SB2021101416 - Privilege escalation in Linux Kernel eBPF
Published: October 14, 2021
Security Bulletin ID
SB2021101416
Severity
Low
Patch available
YES
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) Type Confusion (CVE-ID: CVE-2021-34866)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a type confusion error within the handling of eBPF programs. A local user can run a specially crafted program on the system to trigger a type confusion and execute arbitrary code with kernel privileges.
Remediation
Install update from vendor's website.