Vulnerability in Linux Kernel: net: do not keep the dst cache when uncloning an skb dst and its metadata
Summary
GSD-2022-1000516: net: do not keep the dst cache when uncloning an skb dst and its metadata. Affects Kernel versions >= d71785ffc7e7cae3fbdc4ea8a9d05b7a1c59f7b8, < ff6962c6c9570856f32306859eb92e8b3ea78cc1. 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
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
Background
The Linux Kernel is a widely used open-source operating system kernel that serves as the foundation for numerous Linux distributions. It provides essential functionality for managing system resources, facilitating communication between hardware and software components, and implementing various networking protocols. The vulnerability in question affects the networking subsystem of the Linux Kernel, specifically related to the handling of the destination (dst) cache when uncloning a socket buffer (skb) dst and its metadata.
Vulnerability Detail
The vulnerability arises from a flaw in the Linux Kernel's networking subsystem, where the dst cache is not properly cleared when uncloning an skb dst and its associated metadata. This can lead to the retention of stale or invalid cache entries, potentially resulting in incorrect routing decisions or other network-related issues. While the exact impact and exploitability of this vulnerability have not been confirmed, it is crucial to address it to ensure the integrity and security of network communications on affected systems.
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
No specific workaround has been provided for this vulnerability. It is recommended to apply the official fix by updating the Linux Kernel to the patched version.
Conclusion
The vulnerability in the Linux Kernel's networking subsystem, specifically related to the handling of the dst cache when uncloning an skb dst and its metadata, poses potential risks to network communications on affected systems. It is crucial to update the Linux Kernel to the patched version to mitigate these risks and ensure the integrity and security of network operations. For further assistance or information on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The Linux Kernel is an open-source operating system kernel that forms the core of numerous Linux distributions. It provides essential functionality for managing system resources, facilitating hardware-software interaction, and implementing various networking protocols.
The impact of this vulnerability is not yet confirmed. However, it has the potential to result in incorrect routing decisions or other network-related issues due to the retention of stale or invalid cache entries.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.16.10 or later. The fix was implemented in commit ff6962c6c9570856f32306859eb92e8b3ea78cc1. Users can obtain the updated kernel from the official Linux Kernel repository.
No specific workaround has been provided for this vulnerability. It is advisable to apply the official fix by updating the Linux Kernel to the patched version.
For more information about this vulnerability, you can refer to the vulnerability details in the Open Source Vulnerability format. Additionally, you can reach out to info@devnack.com for further support on vulnerability remediation.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
Habilume
Habit tracker with a companion that grows with you
Complete habits, earn Lume Points, and watch your Lume grow as you stay consistent.
