CVE-2023-40548

Summary

CVE-2023-40548: A critical buffer overflow vulnerability has been identified in the Shim component of 32-bit systems. This issue arises due to an addition operation involving a user-controlled value in a PE binary, which is subsequently used for memory allocation within Shim. The result is a heap-based buffer overflow that can trigger memory corruption, potentially leading to a system crash or data integrity breaches during the boot phase.

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