Matthias Von Faber

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A race condition in the Linux kernel's ipc/mqueue, msg, and sem components can cause a crash when a do mq timedreceive call returns and leaves do mq timedsend to rely on an invalid address. The issue occurs when do mq timedreceive calls wq sleep with a stack local address, which is later used by do mq timedsend to call pipelined send. If the receiver wakes up and returns before the sender, the sender may dereference an invalid address, leading to a crash. The vulnerable function is ` pipelined op()`, which should not dereference `this` after setting STATE READY. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.