CVE-2022-49709

CVE-2022-49709 is a Linux kernel issue where using RCU_NONIDLE during the __cfi_slowpath_diag cpuidle code path can leave the RCU state invalid. The concrete details across connected documents show the root cause: improper RCU usage in cpuidle, leading to a warning trace (rcu_eqs_enter, rcu_idle_...

Linux kernel 安全漏洞

Linux kernel is the kernel used by Linux, the open source operating system of the Linux Foundation in the United States. A security vulnerability exists in the Linux kernel that stems from CFI not properly handling RCU state in the cpuidle path...

CVE-2022-49709: Undefined Security Weakness

In the Linux kernel, the following vulnerability has been resolved: cfi: Fix cfislowpathdiag RCU usage with cpuidle RCUNONIDLE usage during cfislowpathdiag can result in an invalid RCU state in the cpuidle code path: WARNING: CPU: 1 PID: 0 at kernel/rcu/tree.c:613 rcueqsenter+0xe4/0x138 ... Call...