Data Race Vulnerability in Linux Kernel
Summary
GSD-2021-1000847: perf: Fix data race between pin_count increment/decrement. Affects Kernel versions >= fe4b04fa31a6dcf4358aa84cf81e5a7fd079469b, < 0c78dc6cbd99cad6445e1981211efc9bbbd56596. No fix is published. How to fix ↓
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Background
The Linux Kernel is the core component of the Linux operating system, responsible for managing system resources and facilitating communication between hardware and software. It provides essential functionalities such as process management, memory management, and device drivers. The data race vulnerability in the Linux Kernel refers to a specific issue related to the handling of pin_count increment and decrement in the perf subsystem.
Vulnerability Detail
The data race vulnerability in the Linux Kernel occurs when there is a race condition between the increment and decrement operations of the pin_count variable in the perf subsystem. This vulnerability can lead to inconsistent or incorrect pin_count values, potentially resulting in memory corruption, crashes, or privilege escalation attacks. The vulnerability was introduced in version v2.6.39 of the Linux Kernel and was fixed in version v4.9.273.
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 recommended to apply the fix mentioned in the 'how_to_fix' section.
Conclusion
The data race vulnerability in the Linux Kernel can have serious implications, including memory corruption, crashes, or privilege escalation attacks. It is crucial to update to version v4.9.273 or later to mitigate these risks. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The data race vulnerability in the Linux Kernel can potentially lead to memory corruption, crashes, or privilege escalation attacks.
You can use the Vulert Playground at Vulert Scanner to check if your system is affected by this vulnerability. Simply upload your manifest file (e.g., package-lock.json) and Vulert will analyze it for open-source vulnerabilities in real-time.
At the time of this report, there is no known exploit for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
No, the data race vulnerability was introduced in version v2.6.39 of the Linux Kernel. Versions prior to this are not affected.
You can find more information about this vulnerability in the official Linux Kernel repository at https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git.
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