MIPS: Fix Fortify Panic When Copying ASM Exception Handlers in Linux Kernel
Summary
GSD-2022-1002318: MIPS: fix fortify panic when copying asm exception handlers. Affects Kernel versions < 5176c671afb67130298cf5653949309decf4ae66. No fix is published. How to fix ↓
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Background
The Linux Kernel is an open-source monolithic Unix-like computer operating system kernel. It is responsible for managing the system's resources, providing an interface for user programs, and facilitating communication between hardware and software components. The MIPS architecture is a reduced instruction set computer (RISC) architecture commonly used in embedded systems and networking devices. This vulnerability affects the Linux Kernel on MIPS-based systems.
The vulnerability arises when copying assembly (ASM) exception handlers, leading to a fortify panic. Fortify is a security feature in the Linux Kernel that provides additional protection against certain types of vulnerabilities. However, in this case, the copying process triggers a panic, potentially causing a denial of service (DoS) or other unexpected behavior.
Vulnerability Detail
The vulnerability occurs in the Linux Kernel on MIPS-based systems when copying ASM exception handlers. It triggers a fortify panic, potentially leading to a DoS or other unexpected behavior. The exact impact and attack plausibility have not been proven yet. The vulnerability has been assigned the ID GSD-2022-1002318 and is fixed in Linux Kernel version v4.19.238 by commit 5176c671afb67130298cf5653949309decf4ae66.
How To Fix
No fixed version is published for this vulnerability.
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Conclusion
In conclusion, the vulnerability in the Linux Kernel on MIPS-based systems, which triggers a fortify panic when copying ASM exception handlers, can potentially lead to a denial of service (DoS) or other unexpected behavior. It is crucial to update the Linux Kernel to version v4.19.238 or later to fix this vulnerability. For further support on vulnerability remediation, please contact DevNack.com.
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FAQ
The impact of this vulnerability is a potential denial of service (DoS) or other unexpected behavior on MIPS-based systems running the affected Linux Kernel versions.
You can use 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.
No specific workaround has been provided for this vulnerability. It is recommended to update the Linux Kernel to the fixed version.
At the time of this report, there are no known exploits for this vulnerability. However, it is important to apply the fix as soon as possible to mitigate any potential risks.
You can find more information about this vulnerability in the GSD-2022-1002318 entry of the GSD Database maintained by the Cloud Security Alliance. The link to the specific vulnerability entry is provided in the references section of this report.
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