Memory Leak Vulnerability in ptp_clock_register() in Kernel
Summary
GSD-2021-1002098: ptp: Fix possible memory leak in ptp_clock_register(). Affects Kernel versions >= a33121e5487b424339636b25c35d3a180eaa5f5e, < 95c0a0c5ec8839f8f21672be786e87a100319ca8. No fix is published. How to fix ↓
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Background
The Kernel is a critical component of the Linux operating system that manages system resources and facilitates communication between hardware and software. It provides essential functionality for the proper functioning of the system. One of the features of the Kernel is the Precision Time Protocol (PTP), which allows for accurate time synchronization in distributed systems. However, a vulnerability has been discovered in the ptp_clock_register() function of the Kernel, which can lead to a memory leak.
Vulnerability Detail
The vulnerability in ptp_clock_register() function can result in a memory leak. When registering a PTP clock, if an error occurs during the registration process, the memory allocated for the clock is not properly freed, leading to a memory leak. This can potentially exhaust system memory resources over time, causing performance degradation or even system instability. The vulnerability was introduced in version v5.5 of the Linux Kernel and has been fixed in version v5.14.15.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no known workaround for this vulnerability. It is essential to update the Kernel to the fixed version to mitigate the risk of memory leaks.
Conclusion
The memory leak vulnerability in ptp_clock_register() function of the Kernel can have adverse effects on system performance and stability. It is crucial to update the Kernel to version v5.14.15 or later to mitigate the risk of memory leaks. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
The vulnerability can lead to memory leaks, which can gradually consume system memory resources and cause performance degradation or system instability.
You can use tools like Vulert Playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Vulert Playground allows you to analyze your manifest file, such as package-lock.json, and provides real-time alerts for open-source vulnerabilities.
At the time of this report, there is no known exploit for this vulnerability. However, it is crucial to apply the fix as soon as possible to prevent potential memory leaks.
No, the recommended solution is to update the Kernel to the fixed version. Manually fixing the vulnerability without the official patch may not address all the underlying issues and could lead to incomplete mitigation.
You can refer to the official Linux Kernel repository for more information about the fix. The vulnerability details are available in the GSD-2021-1002098.json file in the GSD database (https://github.com/cloudsecurityalliance/gsd-database).
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