Out-of-Bounds Vulnerability in sch_cake Kernel Package
Summary
GSD-2021-1000983: sch_cake: Fix out of bounds when parsing TCP options and header. Affects Kernel versions >= 8b7138814f29933898ecd31dfc83e35a30ee69f5, < 3b491dd593d582ceeb27aa617600712a6bd14246. 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 queuing discipline, which is used to prioritize and control the flow of packets. The vulnerability in sch_cake arises from a flaw in the parsing of TCP options and headers, leading to an out-of-bounds read. This vulnerability can potentially be exploited by an attacker to execute arbitrary code or cause a denial-of-service condition.
Vulnerability Detail
The vulnerability in sch_cake occurs when parsing TCP options and headers. Due to improper bounds checking, an out-of-bounds read can be triggered, leading to potential memory corruption or information disclosure. This vulnerability was introduced in version v4.19 of the Linux Kernel and was fixed in version v5.10.46. The impact and attack plausibility of this vulnerability have not been proven yet.
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 advised to apply the fix by updating the Linux Kernel to the recommended version.
Conclusion
The out-of-bounds vulnerability in sch_cake can pose a significant risk to systems running the affected versions of the Linux Kernel. It is crucial to update the kernel to the fixed version to mitigate the potential exploitation of this vulnerability. For further support and assistance in vulnerability remediation, please contact DevNack.com.
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FAQ
sch_cake is a component of the Linux Kernel that provides the Cake queuing discipline for network traffic shaping.
This vulnerability can potentially allow an attacker to execute arbitrary code or cause a denial-of-service condition.
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 to the playground and it will provide real-time alerts for open-source vulnerabilities.
No, there is no specific workaround available for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
The fixed version of the Linux Kernel (v5.10.46 or later) can be obtained from the official Linux Kernel repository.
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