Kernel Page Table Vulnerability in Linux Kernel by Linux Foundation

CVE-2026-99093

What is CVE-2026-99093?

A vulnerability has been identified in the Linux Kernel related to the scheduling of deferred kernel page table freeing during the boot process. When utilizing a boot-time function tracer with a filtered setting, the system can experience a kernel panic due to a general protection fault, chiefly when the work queue is not initialized. This issue arises from an improper handling of page table states, leading to null pointer dereference and kernel instability. It is crucial to address this vulnerability to ensure a reliable boot process and system performance.

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