net: preserve skb_end_offset() in skb_unclone_keeptruesize() - Kernel
Summary
GSD-2022-1001422: net: preserve skb_end_offset() in skb_unclone_keeptruesize(). Affects Kernel versions >= c4777efa751d293e369aec464ce6875e957be255, < a9a6d30264327d8ff7f23da33e7a77ffb793fa3f. No fix is published. How to fix ↓
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Background
The Kernel is a fundamental component of the Linux operating system that provides essential services and functionality to other software components. It is responsible for managing system resources, facilitating communication between hardware and software, and implementing core operating system features. The vulnerability in question affects the Kernel's networking subsystem, specifically the skb_unclone_keeptruesize() function.
Vulnerability Detail
The vulnerability arises from a failure to preserve the skb_end_offset() function in the skb_unclone_keeptruesize() function within the Kernel's networking subsystem. This oversight can lead to potential security vulnerabilities, although the actual impact and attack plausibility have not been proven. The vulnerability was introduced in version v5.16 of the Linux Kernel by commit c4777efa751d293e369aec464ce6875e957be255 and has been fixed in version v5.16.19 by commit a9a6d30264327d8ff7f23da33e7a77ffb793fa3f.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
No specific workaround has been provided for this vulnerability.
Conclusion
In conclusion, the net: preserve skb_end_offset() in skb_unclone_keeptruesize() vulnerability affects the Kernel's networking subsystem. While the actual impact and attack plausibility have not been proven, it is crucial to update the Linux Kernel to version v5.16.19 or later to mitigate any potential security risks. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is currently unknown as the actual attack plausibility has not been proven. However, it is important to apply the fix as soon as possible to mitigate any potential security risks.
You can use the Vulert playground (https://vulert.com/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 in real-time to identify any open-source vulnerabilities, including this one.
No specific temporary measures have been provided for this vulnerability. It is recommended to update the Kernel to the fixed version as soon as possible.
There are currently no known exploits for this vulnerability. However, it is important to apply the fix to prevent any potential future exploits.
You can find more information about this vulnerability in the official Linux Kernel Git repository (https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/) and the vulnerability database maintained by the Cloud Security Alliance (https://github.com/cloudsecurityalliance/gsd-database).
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