commit
fbbf8555a986ed31e54f006b6cc637ea4ff1425b upstream.
This patch adds missing bounds checking for the configfs provided
mapped_lun value during target_fabric_make_mappedlun() setup ahead
of se_lun_acl initialization.
This addresses a potential OOPs when using a mapped_lun value that
exceeds the hardcoded TRANSPORT_MAX_LUNS_PER_TPG-1 value within
se_node_acl->device_list[].
Reported-by: Jan Engelhardt <jengelh@inai.de>
Cc: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
ret = -EINVAL;
goto out;
}
+ if (mapped_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
+ pr_err("Mapped LUN: %lu exceeds TRANSPORT_MAX_LUNS_PER_TPG"
+ "-1: %u for Target Portal Group: %u\n", mapped_lun,
+ TRANSPORT_MAX_LUNS_PER_TPG-1,
+ se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg));
+ ret = -EINVAL;
+ goto out;
+ }
lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
mapped_lun, &ret);