CVE-2024-56768

Summary

CVE-2024-56768 is a vulnerability affecting the Linux kernel. When bpf_get_smp_processor_id() is called on a kernel with Configuration SMP (Symmetric Multi-Processing) disabled, the unavailability of pcpu_hot can result in a kernel panic with a supervisor read access error. This occurs due to an attempt to access a not-present page. The issue has been mitigated by inlining a return 0 statement in the !CONFIG_SMP case to prevent the bug from being triggered.

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