SB2023030901 - Denial of service in Linux kernel Traffic Control (TC) subsystem
Published: March 9, 2023
Security Bulletin ID
SB2023030901
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) Deadlock (CVE-ID: CVE-2022-4269)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an error in the Linux kernel Traffic Control (TC) subsystem. A local user can use a specific network configuration (redirecting egress packets to ingress using TC action "mirred") to trigger a CPU soft lockup.
Remediation
Install update from vendor's website.