CVE-2023-54096

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> soundwire: fix enumeration completion<br /> <br /> The soundwire subsystem uses two completion structures that allow<br /> drivers to wait for soundwire device to become enumerated on the bus and<br /> initialised by their drivers, respectively.<br /> <br /> The code implementing the signalling is currently broken as it does not<br /> signal all current and future waiters and also uses the wrong<br /> reinitialisation function, which can potentially lead to memory<br /> corruption if there are still waiters on the queue.<br /> <br /> Not signalling future waiters specifically breaks sound card probe<br /> deferrals as codec drivers can not tell that the soundwire device is<br /> already attached when being reprobed. Some codec runtime PM<br /> implementations suffer from similar problems as waiting for enumeration<br /> during resume can also timeout despite the device already having been<br /> enumerated.