netfilter: ipset: Fix oversized kvmalloc() calls in Kernel
Summary
GSD-2021-1001713: netfilter: ipset: Fix oversized kvmalloc() calls. Affects Kernel versions < 3213f5f8d4add82c3369f30334d105177a108e39. 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 is a critical component of the Linux operating system that provides core functionalities and acts as an interface between hardware and software. It manages system resources, facilitates communication between different software components, and ensures security and stability. The netfilter subsystem within the Kernel is responsible for packet filtering, network address translation, and other network-related operations. One of the components in netfilter is ipset, which provides a framework for managing sets of IP addresses, networks, and ports. However, ipset is vulnerable to oversized kvmalloc() calls, which can lead to memory allocation failures and potential security issues.
Vulnerability Detail
The vulnerability in netfilter's ipset arises from the use of oversized kvmalloc() calls. This can result in memory allocation failures, leading to potential security risks such as denial-of-service attacks or arbitrary code execution. Attackers may exploit this vulnerability to exhaust system memory or execute malicious code with elevated privileges. The impact and attack plausibility of this vulnerability have not been proven yet, but it is crucial to address it to ensure system security.
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 →
Conclusion
The netfilter ipset vulnerability in the Kernel can lead to memory allocation failures and potential security risks. It is crucial to update the Linux Kernel to version v5.14.10 or later to fix this issue. By doing so, you can ensure the proper handling of oversized kvmalloc() calls and mitigate the risk of denial-of-service attacks or arbitrary code execution. For further support on vulnerability remediation, you can reach out to DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The impact of this vulnerability can range from denial-of-service attacks to arbitrary code execution. Attackers may exploit this issue to exhaust system memory or execute malicious code with elevated privileges.
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, using just a manifest file like package-lock.json.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version to address the issue.
You can find more information about this vulnerability in the Open Source Vulnerability database maintained by the Cloud Security Alliance. The vulnerability ID is GSD-2021-1001713.
To update the Linux Kernel, you can follow the official documentation provided by your Linux distribution. Typically, it involves using package managers like apt, yum, or dnf to install the latest Kernel version available for your distribution.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
