Security vulnerabilities and automated fixes for cwe 787 issues
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A critical memory corruption vulnerability in a kernel FAT32 filesystem driver allowed attackers to trigger out-of-bounds writes by crafting malicious filesystem images, ultimately enabling arbitrary code execution at the highest privilege level (ring 0). The fix adds proper bounds validation for directory entry indices and cluster offsets parsed from on-disk FAT32 structures, closing a complete privilege escalation chain that could give an attacker full control of the system.
A critical heap buffer overflow vulnerability was discovered and patched in MeltedForge's core array implementation, where the `mfarray` insert operation performed `memmove` and `memcpy` without validating index bounds or available capacity. Left unpatched, this flaw could allow attackers to corrupt heap metadata and adjacent data structures, potentially leading to arbitrary code execution. The fix introduces proper bounds checking before any memory operations are performed.