af_packet: Fix Data-Race in packet_setsockopt / packet_setsockopt
Summary
GSD-2022-1000134: af_packet: fix data-race in packet_setsockopt / packet_setsockopt. Affects Kernel versions >= 47dceb8ecdc1c3ad1818dfea3d659a05b74c3fc2, < 1f0c712832907baef27d13721b3ca2e515d39ecf. 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 af_packet package is a part of the Linux Kernel ecosystem. It provides a socket interface for user-space applications to send and receive packets directly from the network stack. This package is responsible for handling network communication and plays a critical role in the functioning of the Linux operating system.
Vulnerability Detail
The vulnerability identified in af_packet is a data-race issue in the packet_setsockopt / packet_setsockopt functions. This vulnerability was introduced in version v4.3 of the Linux Kernel and was fixed in version v4.19.228. A data-race occurs when multiple threads access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security vulnerabilities. In this case, the data-race in packet_setsockopt / packet_setsockopt could be exploited by an attacker to manipulate network packets or cause a denial-of-service (DoS) condition.
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
As this vulnerability is fixed in the latest version of the Linux Kernel, there is no specific workaround available. It is strongly advised to update the Kernel to the recommended version.
Conclusion
The af_packet package in the Linux Kernel was found to have a data-race vulnerability in the packet_setsockopt / packet_setsockopt functions. This vulnerability could be exploited to manipulate network packets or cause a denial-of-service condition. It is crucial to update the Linux Kernel to version v4.19.228 or later to mitigate this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
af_packet is a package in the Linux Kernel that provides a socket interface for user-space applications to send and receive network packets directly from the network stack. It plays a crucial role in network communication within the Linux operating system.
A data-race vulnerability occurs when multiple threads access shared data concurrently without proper synchronization. This can lead to unpredictable behavior and potential security vulnerabilities.
The data-race vulnerability in packet_setsockopt / packet_setsockopt could be exploited by an attacker to manipulate network packets or cause a denial-of-service (DoS) condition.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v4.19.228 or later. This update includes the necessary patch to address the data-race issue.
As this vulnerability is fixed in the latest version of the Linux Kernel, there is no specific workaround available. It is strongly advised to update the Kernel to the recommended version.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
