Description: iscsi_host_get_param() allows sysfs params larger than 4k
References:
 https://bugzilla.redhat.com/show_bug.cgi?id=1930078
 https://www.openwall.com/lists/oss-security/2021/03/06/1
 https://bugzilla.suse.com/show_bug.cgi?id=1182715
Notes:
Bugs:
upstream: released (5.12-rc2) [ec98ea7070e94cc25a422ec97d1421e28d97b7ee, f9dbdf97a5bd92b1a49cee3d591b55b11fd7a6d5]
5.10-upstream-stable: released (5.10.21) [76d92bf293c36a52ea5552919ac645ef2edee55d, f40bbcb68131f1c17ed22a1e8a471776b4e57bd3]
4.19-upstream-stable: released (4.19.179) [b2957d7baff77b399c7408dc12bacc7f63765897, 23e2942885e8db57311cb4f9a719fd0306073c40]
4.9-upstream-stable: released (4.9.260) [9ce352a1fbfb9d16353ea30cf4b922a1a049fe69, 83da484358770d6e50eace0c140bef981324adca]
sid: released (5.10.24-1)
4.19-buster-security: released (4.19.181-1)
4.9-stretch-security: released (4.9.258-1) [bugfix/all/scsi-iscsi-verify-lengths-on-passthrough-PDUs.patch, bugfix/all/scsi-iscsi-verify-lengths-on-passthrough-PDUs.patch]