CVE-2022-49540

In the Linux kernel, the following vulnerability has been resolved: rcu-tasks: Fix race in schedule and flush work While booting secondary CPUs, cpusreadlock/unlock is not keeping online cpumask stable. The transient online mask results in below calltrace. 0.324121 CPU1: Booted secondary processo...

CVE-2022-49540

CVE-2022-49540 refers to a race in the Linux kernel’s RCU Tasks Rude grace-period handling. The issue occurs during boot when multiple CPUs come online and the rcu_tasks_rude_wait_gp() flow calls schedule_on_each_cpu(), which can mis-handle the online cpumask and produce a call trace in __flush_w...