Kernel Vulnerability in Linux Affecting Kprobes Functionality

CVE-2026-64163

What is CVE-2026-64163?

A vulnerability present in the Linux kernel impacts the kprobes functionality during testing sequences. When the kprobes sanity tests are executed multiple times without proper data clearance between runs, it leads to unforeseen failures and potential kernel crashes. The failure occurs due to leftover data from previous test executions, which inhibits the successful registration of kprobes in subsequent tests. The resolution for this issue involved moving the cleanup procedures for all kprobes into a dedicated initialization function, ensuring that each test run operates with a clean state, and thereby maintaining system stability and reliability.

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