Description: scsi: stex: properly zero out the passthrough command structure
References:
 https://www.openwall.com/lists/oss-security/2022/09/09/1
 https://lore.kernel.org/all/20220908145154.2284098-1-gregkh@linuxfoundation.org/
Notes:
Bugs:
upstream: released (6.1-rc1) [6022f210461fef67e6e676fd8544ca02d1bcfa7a]
5.10-upstream-stable: released (5.10.148) [36b33c63515a93246487691046d18dd37a9f589b]
4.19-upstream-stable: released (4.19.262) [a99c5e38dc6c3dc3da28489b78db09a4b9ffc8c3]
sid: released (6.0.2-1)
5.10-bullseye-security: released (5.10.148-1)
4.19-buster-security: released (4.19.269-1)