Vulnerability in sch_cake Package: Calling cake_destroy() from cake_init()
Summary
GSD-2021-1002649: sch_cake: do not call cake_destroy() from cake_init(). Affects Kernel versions >= 046f6fd5daefac7f5abdafb436b30f63bc7c602b, < 4e388232e630ebe4f94b4a0715ec98c0e2b314a3. No fix is published. How to fix ↓
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Background
The sch_cake package is a component of the Linux Kernel, which is responsible for managing network traffic shaping. It provides the Cake (Common Applications Kept Enhanced) queuing discipline, which is designed to optimize network traffic and ensure fair bandwidth allocation. The vulnerability in question arises from an incorrect implementation in the package's cake_init() function, where it calls the cake_destroy() function. This flaw can lead to unexpected behavior and potential security risks.
Vulnerability Detail
The vulnerability occurs when the cake_init() function in the sch_cake package calls the cake_destroy() function. This is an incorrect implementation, as the cake_destroy() function is intended to release resources and should not be called during initialization. The impact and attack plausibility of this vulnerability have not been proven yet. However, it is important to address this issue to prevent any potential security risks that may arise from the incorrect usage of the cake_destroy() function.
How To Fix
No fixed version is published for this vulnerability.
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Workaround
There is no specific workaround mentioned for this vulnerability.
Conclusion
In conclusion, the sch_cake package in the Linux Kernel has a vulnerability where the cake_init() function incorrectly calls the cake_destroy() function. This can lead to unexpected behavior and potential security risks. To mitigate the vulnerability, it is recommended to update to Linux Kernel version v4.19.222 or a later version. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The sch_cake package is a component of the Linux Kernel that provides the Cake queuing discipline for network traffic shaping.
Calling cake_destroy() from cake_init() can lead to unexpected behavior and potential security risks.
To fix this vulnerability, update to Linux Kernel version v4.19.222 or a later version, which includes the necessary fix.
No specific workaround has been mentioned for this vulnerability.
For more details about this vulnerability, refer to the provided references link.
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