Jun Miao

**Name of the Vulnerable Software and Affected Versions** Linux kernel versions prior to 5.17.1-rt17+ **Description** A issue in the Linux kernel has been identified where a sleeping function is called from an invalid context on RT kernel. This occurs when setting specific boot parameters, including "trace event=initcall:initcall start tp printk=1", which triggers the output printk() function and subsequently calls spin lock irqsave() in an atomic and irq disable interrupt context situation. On PREEMPT RT kernel, these locks are replaced with sleepable rt-spinlock, leading to a stack calltrace. The problem arises due to the use of spin lock irqsave when PREEMPT RT and the specified trace event are enabled. **Recommendations** For Linux kernel version 5.17.1-rt17+, apply the fix by using raw spin lock irqsave when PREEMPT RT and "trace event=initcall:initcall start tp printk=1" are enabled. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

**Name of the Vulnerable Software and Affected Versions** Linux kernel (affected versions not specified) **Description** The issue is related to the ice driver in the Linux kernel, where an attempt to free the aux idx IDA can cause a crash when unloading the driver on systems that do not initialize support for RDMA. This is because the IDA is allocated if the driver detects support for RDMA at probe time, but the driver can enter a state where RDMA is not supported after the IDA has been allocated, leading to a memory leak. The fix involves initializing aux idx to an invalid value and checking for a valid value when unloading to determine if an IDA free is necessary. **Recommendations** At the moment, there is no information about a newer version that contains a fix for this vulnerability.