Race Condition in Linux Kernel Affecting Tracing Functionality

CVE-2023-53368

What is CVE-2023-53368?

A race condition was discovered in the Linux kernel's tracing subsystem, specifically within the CPU buffer handling mechanism. This vulnerability occurs due to concurrent operations between writing events to the CPU buffer and swapping the buffer via a snapshot mechanism. The improper management of buffer states can lead to system warnings and potential instability during high-frequency tracing activities. Mitigation strategies are available through appropriate kernel patches, which address the synchronization issues between buffer write and swap operations.

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