CVE-2025-38388 firmware: arm_ffa: Replace mutex with rwlock to avoid sleep in atomic context

In the Linux kernel, the following vulnerability has been resolved: firmware: armffa: Replace mutex with rwlock to avoid sleep in atomic context The current use of a mutex to protect the notifier hashtable accesses can lead to issues in the atomic context. It results in the below kernel warnings:...

CVE-2025-38388

CVE-2025-38388 concerns the Linux kernel’s ARM Firmware Framework for ARMv8-A (FFA). The issue stems from using a mutex to protect the notifier hashtable accesses, which could sleep in atomic context and trigger warnings like “sleeping function called from invalid context.” Connected documents co...