Thunderbolt Vulnerability Fix in Linux Kernel

CVE-2024-50227

What is CVE-2024-50227?

A vulnerability has been identified in the Thunderbolt implementation of the Linux kernel, specifically in the tb_retimer_scan function. This flaw arises due to a stack out-of-bounds read caused by an incorrect loop variable increment, which results in reading past the declared stack array. The issue is evident in the Kernel Address Sanitizer (KASAN) reports, indicating that a read operation at an invalid memory address took place. The vulnerability could potentially allow unauthorized access to memory, thereby impacting the overall security posture of affected systems. The issue has been addressed by modifying the loop logic to ensure proper index assignment directly within the loop body.

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