SB2022082449 - Improper initialization in Linux kernel
Published: August 24, 2022
Security Bulletin ID
SB2022082449
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper initialization (CVE-ID: CVE-2021-4218)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
A flaw was found in the Linux kernel's implementation of reading the SVC RDMA counters. Reading the counter sysctl panics the system. This flaw allows a local attacker with local access to cause a denial of service while the system reboots. The issue is specific to CentOS/RHEL.
Remediation
Install update from vendor's website.