Data Races in proc_douintvec_minmax() in Kernel
Summary
GSD-2022-1004575: sysctl: Fix data races in proc_douintvec_minmax(). Affects Kernel versions >= 61d9b56a89208d8cccd0b4cfec7e6959717e16e3, < e3a2144b3b6bf9ecafd91087c8b8b48171ec19df. No fix is published. How to fix ↓
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Background
The Kernel is a crucial component of the Linux operating system that acts as a bridge between the hardware and software layers. It provides essential functionalities, such as process management, memory management, and device drivers. The proc_douintvec_minmax() function is a part of the sysctl subsystem in the Kernel. It is responsible for handling unsigned integer vector sysctl variables with minimum and maximum limits.
Vulnerability Detail
The vulnerability in proc_douintvec_minmax() introduces data races, which occur when multiple threads access shared data concurrently without proper synchronization. This can lead to unpredictable behavior and potential security issues. Attackers may exploit these data races to manipulate the shared data, resulting in denial of service, privilege escalation, or information disclosure. The vulnerability was introduced in version v4.13 of the Linux Kernel and has been fixed in version v5.10.132.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround available for this vulnerability. It is essential to apply the Kernel update as mentioned in the 'how_to_fix' section to mitigate the risk of data races in proc_douintvec_minmax().
Conclusion
The data races in proc_douintvec_minmax() vulnerability in the Kernel can have severe security implications. It is crucial to update the Linux Kernel to version v5.10.132 or later to mitigate the risk. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to unpredictable behavior and potential security issues. Attackers may exploit the data races to manipulate shared data, resulting in denial of service, privilege escalation, or information disclosure.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your package-lock.json file, and Vulert will analyze it for any open-source vulnerabilities, including this one.
At the time of this report, there is no known exploit for this vulnerability. However, it is crucial to apply the recommended Kernel update to mitigate the risk.
No, the vulnerability was introduced in version v4.13 of the Linux Kernel. Versions prior to v4.13 are not affected. The issue has been fixed in version v5.10.132 and later.
It is highly recommended to update the Kernel to the fixed version instead of manually patching the vulnerability. Kernel updates include various bug fixes, performance improvements, and security enhancements, making them the most reliable solution.
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