CVE-2021-47576 scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()

In the Linux kernel, the following vulnerability has been resolved: scsi: scsidebug: Sanity check block descriptor length in respmodeselect In respmodeselect sanity check the block descriptor len to avoid UAF. BUG: KASAN: use-after-free in respmodeselect+0xa4c/0xb40 drivers/scsi/scsidebug.c:2509...