CVE-2026-19936: Concurrent Execution using Shared Resource with Improper Synchronization

The Bluetooth Mesh Access-layer delayable message queue in subsys/bluetooth/mesh/delayablemsg.c shares three intrusive lists busyctx, freectx, freechunks and one kworkdelayable between two cooperative threads with no synchronization: btmeshdelayablemsgmanage runs on the Bluetooth host RX thread,...