In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Fix race between unprepare and queuebuf A client driver may use mhiunpreparefromtransfer() to quiesce incoming data during the client driver's tear down. The client driver might also be processing data at the same time, resulting in a call to mhiqueuebuf() which will invoke mhigentre(). If mhigentre() runs after mhiunpreparefromtransfer() has torn down the channel, a panic will occur due to an invalid dereference leading to a page fault. This occurs because mhigentre() does not verify the channel state after locking it. Fix this by having mhigen_tre() confirm the channel state is valid, or return error to avoid accessing deinitialized data. [mani: added stable tag]