CVE-2024-46842

In the Linux kernel, the following vulnerability has been resolved:

scsi: lpfc: Handle mailbox timeouts in lpfcgetsfp_info

The MBXTIMEOUT return code is not handled in lpfcgetsfpinfo and the routine unconditionally frees submitted mailbox commands regardless of return status. The issue is that for MBX_TIMEOUT cases, when firmware returns SFP information at a later time, that same mailbox memory region references previously freed memory in its cmpl routine.

Fix by adding checks for the MBXTIMEOUT return code. During mailbox resource cleanup, check the mbox flag to make sure that the wait did not timeout. If the MBOXWAKE flag is not set, then do not free the resources because it will be freed when firmware completes the mailbox at a later time in its cmpl routine.

Also, increase the timeout from 30 to 60 seconds to accommodate boot scripts requiring longer timeouts.