Vulnerability in Kernel: arm64 stackleak
Summary
GSD-2022-1002763: arm64: stackleak: fix current_top_of_stack(). Affects Kernel versions >= 0b3e336601b82c6afa0e9cf21db9cb8793e25399, < 9b76921de47e44724119a92837f50c992fce6a18. 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 communication between hardware and software. It provides essential functions and services to enable the proper functioning of the system. The arm64 architecture is specifically designed for 64-bit ARM processors. The stackleak feature in the Kernel is responsible for preventing information leaks from the kernel stack. However, a vulnerability has been discovered in the arm64 stackleak implementation.
Vulnerability Detail
The arm64 stackleak vulnerability, identified as GSD-2022-1002763, allows an attacker to bypass the stackleak protection mechanism and potentially leak sensitive information from the kernel stack. This vulnerability was introduced in version v4.19 of the Linux Kernel and has been fixed in version v5.18.3. 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
No specific workaround has been mentioned for this vulnerability.
Conclusion
The arm64 stackleak vulnerability in the Kernel can potentially lead to information leaks from the kernel stack. It is crucial to update the Linux Kernel to version v5.18.3 or later to address this vulnerability. For further support on vulnerability remediation, you can reach out to DevNack.com.
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FAQ
The arm64 stackleak vulnerability is a security flaw in the Linux Kernel's stackleak feature that allows potential information leaks from the kernel stack.
The impact of this vulnerability is not yet proven, but it has the potential to expose sensitive information from the kernel stack.
You can use Vulert's playground (https://vulert.com/scanner) to check if your system is affected by this vulnerability. Simply upload your package-lock.json file to the playground and it will alert you in real-time if the vulnerability is present.
Yes, the vulnerability has been fixed in Linux Kernel version v5.18.3. It is recommended to update to this version or later to mitigate the risk.
You can find more information about this vulnerability in the GSD-2022-1002763 JSON file available in the GSD database (https://github.com/cloudsecurityalliance/gsd-database).
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