CVE-2022-48792

In the Linux kernel, the following vulnerability has been resolved:<br /> <br /> scsi: pm8001: Fix use-after-free for aborted SSP/STP sas_task<br /> <br /> Currently a use-after-free may occur if a sas_task is aborted by the upper<br /> layer before we handle the I/O completion in mpi_ssp_completion() or<br /> mpi_sata_completion().<br /> <br /> In this case, the following are the two steps in handling those I/O<br /> completions:<br /> <br /> - Call complete() to inform the upper layer handler of completion of<br /> the I/O.<br /> <br /> - Release driver resources associated with the sas_task in<br /> pm8001_ccb_task_free() call.<br /> <br /> When complete() is called, the upper layer may free the sas_task. As such,<br /> we should not touch the associated sas_task afterwards, but we do so in the<br /> pm8001_ccb_task_free() call.<br /> <br /> Fix by swapping the complete() and pm8001_ccb_task_free() calls ordering.