Data Race Vulnerability in Linux Kernel
Summary
GSD-2022-1004520: tcp: Fix a data-race around sysctl_tcp_early_retrans. Affects Kernel versions >= eed530b6c67624db3f2cf477bac7c4d005d8f7ba, < 11e8b013d16e5db63f8f76acceb5b86964098aaa. 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 Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware. It is a critical piece of software that is constantly being developed and improved by a large community of contributors. However, like any complex software, it is susceptible to vulnerabilities that can be exploited by attackers.
Vulnerability Detail
The identified vulnerability in the Linux Kernel is related to a data race around the sysctl_tcp_early_retrans feature. A data race occurs when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security risks. In this case, the data race can be exploited by an attacker to manipulate the sysctl_tcp_early_retrans setting, potentially impacting the reliability and performance of TCP connections.
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 a temporary workaround, users can disable the sysctl_tcp_early_retrans feature by modifying the kernel configuration. This can be achieved by setting the value of sysctl_tcp_early_retrans to 0. However, it is important to note that this workaround may impact the performance and reliability of TCP connections, and it is recommended to apply the official fix as soon as possible.
Conclusion
In conclusion, the identified data race vulnerability in the Linux Kernel around the sysctl_tcp_early_retrans feature can be addressed by updating the kernel to version v5.10.134 or later. Users can also apply a temporary workaround by disabling the feature, but it is advisable to apply the official fix as soon as possible. For further support on vulnerability remediation, please contact DevNack.com.
See every vulnerability recorded for Kernel →
FAQ
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and providing an interface for applications to interact with the hardware.
A data race occurs when multiple threads or processes access shared data concurrently without proper synchronization, leading to unpredictable behavior and potential security risks.
This vulnerability can be exploited by an attacker to manipulate the sysctl_tcp_early_retrans setting, potentially impacting the reliability and performance of TCP connections.
To fix this vulnerability, it is recommended to update the Linux Kernel to version v5.10.134 or later. The fix for this issue was implemented in commit 11e8b013d16e5db63f8f76acceb5b86964098aaa.
Yes, as a temporary workaround, users can disable the sysctl_tcp_early_retrans feature by modifying the kernel configuration. However, it is recommended to apply the official fix as soon as possible.
Related vulnerabilities
Recent vulnerabilities recorded for Kernel.
