net/sched: act_skbmod: Skip non-Ethernet packets
Summary
UVI-2021-1001370: net/sched: act_skbmod: Skip non-Ethernet packets. Affects Kernel versions >= 86da71b57383d40993cb90baafb3735cffe5d800, < e4fdca366806f6bab374d1a95e626a10a3854b0c. No fix is published. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
The Kernel package is a crucial component of the Linux operating system. It provides the core functionality and interfaces for the system, including managing processes, memory, and device drivers. The act_skbmod module in the net/sched subsystem is responsible for modifying packets in the network stack. However, a vulnerability has been discovered in this module that allows non-Ethernet packets to bypass the necessary checks and modifications.
Vulnerability Detail
The vulnerability in the act_skbmod module allows non-Ethernet packets to skip the expected processing, potentially leading to unexpected behavior or security issues. By bypassing the checks, malicious packets could reach higher layers of the network stack without being properly handled. The impact and attack plausibility of this vulnerability have not been proven yet, but it is essential to address it to ensure the integrity and security of the network stack.
How To Fix
No fixed version is published for this vulnerability.
Tip — Not sure whether your app is affected? Vulert can check the versions your app actually runs. Scan free →
Workaround
There is no specific workaround mentioned for this vulnerability. The recommended solution is to update the Kernel package to the fixed version.
Conclusion
The vulnerability in the act_skbmod module of the Kernel package allows non-Ethernet packets to bypass necessary checks and modifications. While the impact and attack plausibility have not been proven, it is recommended to update the Kernel package to version v4.19.199 or later to address this vulnerability. For further support on vulnerability remediation, you can contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability is not yet proven, but it could potentially lead to unexpected behavior or security issues in the network stack.
You can use Vulert's playground at Vulert Scanner to check if your system is affected by this vulnerability. Vulert monitors and alerts in real-time for open-source vulnerabilities without requiring access to the code or installation.
Yes, a fix is available in the Linux Kernel version v4.19.199 or later. Updating the Kernel package to this version will address the vulnerability.
There are no known exploits for this vulnerability at the moment. However, it is still important to apply the fix to prevent any potential security issues.
You can find more information about this vulnerability in the Open Source Vulnerability database maintained by the Cloud Security Alliance. The specific vulnerability ID is UVI-2021-1001370.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
