Executive Summary

This vulnerability exists in the Linux kernel's LoongArch architecture where the syscall number is directly controlled by userspace. The issue is that there is no array_index_nospec() boundary check to prevent access beyond the syscall function pointer tables. This lack of boundary checking can lead to potential out-of-bounds access in the syscall dispatch table.

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Impact Analysis

Because the syscall number is controlled by userspace without proper boundary checks, an attacker could potentially exploit this to access or execute unintended syscall function pointers. This could lead to unauthorized code execution or system instability.

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