CVE-2024-49926

CVE-2024-49926 affects the Linux kernel’s rcu-tasks path (rcu_tasks_need_gpcb). The root cause is an access to a non-existent percpu rtpcp variable when CONFIG_FORCE_NR_CPUS=y, causing nr_cpu_ids to resolve to NR_CPUS instead of the number of possible CPUs, which can lead to a kernel page fault a...