Bluetooth Vulnerability in Linux Kernel Affecting Multiple Products by Various Vendors

CVE-2023-53252

What is CVE-2023-53252?

A vulnerability in the Linux kernel's Bluetooth stack could lead to unstable behavior and potential crashes. The issue arises from unsafe iteration over connection lists during Bluetooth operations, which can invalidate list cursors and lead to use-after-free errors. By using Read-Copy-Update (RCU) techniques and iterating on a copied list, the kernel mitigates risks of data corruption and enhances the stability of Bluetooth connections. This vulnerability may be triggered under specific conditions, emphasizing the importance of keeping systems updated to the latest kernel versions to ensure protection.

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