SB2023012444 - Denial of service in Linux kernel traffic control subsystem
Published: January 24, 2023
Security Bulletin ID
SB2023012444
Severity
Medium
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) NULL pointer dereference (CVE-ID: CVE-2022-47929)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in the traffic control subsystem in Linux kernel. A local user can pass pass a specially crafted traffic control configuration that is set up with "tc qdisc" and "tc class" commands and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.