CVE-2023-53218

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> rxrpc: Make it so that a waiting process can be aborted<br /> <br /> When sendmsg() creates an rxrpc call, it queues it to wait for a connection<br /> and channel to be assigned and then waits before it can start shovelling<br /> data as the encrypted DATA packet content includes a summary of the<br /> connection parameters.<br /> <br /> However, sendmsg() may get interrupted before a connection gets assigned<br /> and further sendmsg() calls will fail with EBUSY until an assignment is<br /> made.<br /> <br /> Fix this so that the call can at least be aborted without failing on<br /> EBUSY. We have to be careful here as sendmsg() mustn&amp;#39;t be allowed to start<br /> the call timer if the call doesn&amp;#39;t yet have a connection assigned as an<br /> oops may follow shortly thereafter.