Usama Arif

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** A vulnerability in the Linux kernel's hrtimers infrastructure allows wakeups to be performed by an outgoing CPU after the CPUHP AP HRTIMERS DYING stage, potentially resulting in bandwidth timers being armed on an offline CPU. This issue affects not only RCU but also other components, such as the stop machine kthread, which can report its completion and perform a wake up that arms the deadline server timer. The problem is resolved by migrating away timers to an online target whenever they are enqueued from an offline CPU. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.