Integer Overflow Vulnerability in Linux Kernel Firmware Handling

CVE-2022-50330

What is CVE-2022-50330?

In the Linux kernel, an integer overflow vulnerability has been identified when loading untrusted firmware. This issue arises from the calculation involving the 'code_length' value from a firmware file, specifically during the multiplication of 'ntohl(ucode->code_length) * 2'. If the firmware is compromised or untrusted, the integer overflow could lead to unexpected behavior or potential exploitation of the system. Efforts to mitigate the risk include marking data read from the filesystem as untrusted and providing warnings when not properly capped. This vulnerability emphasizes the importance of secure firmware handling practices.

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