Executive Summary

This vulnerability is a potential buffer overflow in the Linux kernel's framebuffer registration function (do_register_framebuffer). It occurs when unregistration creates NULL gaps in the framebuffer array, all array slots become occupied even though the count is less than the maximum, and the registration loop exceeds the array bounds, leading to out-of-bounds access. The fix adds a boundary check to prevent accessing beyond the maximum allowed framebuffer entries.

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Impact Analysis

The buffer overflow could lead to memory corruption in the Linux kernel, potentially causing system instability, crashes, or allowing an attacker to execute arbitrary code with kernel privileges.

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