diff options
| author | Lin Ma <linma@zju.edu.cn> | 2023-07-23 15:59:38 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-09-23 10:48:07 +0200 |
| commit | 94ec7f346006ba068f24c5140113dad7551a160e (patch) | |
| tree | f5391c54aa9bb1a263f20319ee85ae487f94a954 | |
| parent | dded34dd7dffc3e7f4ec000c9e110982ac20a5c1 (diff) | |
| download | linux-stable-94ec7f346006ba068f24c5140113dad7551a160e.tar.gz linux-stable-94ec7f346006ba068f24c5140113dad7551a160e.tar.bz2 linux-stable-94ec7f346006ba068f24c5140113dad7551a160e.zip | |
scsi: be2iscsi: Add length check when parsing nlattrs
[ Upstream commit ee0268f230f66cb472df3424f380ea668da2749a ]
beiscsi_iface_set_param() parses nlattr with nla_for_each_attr and assumes
every attributes can be viewed as struct iscsi_iface_param_info.
This is not true because there is no any nla_policy to validate the
attributes passed from the upper function iscsi_set_iface_params().
Add the nla_len check before accessing the nlattr data and return EINVAL if
the length check fails.
Fixes: 0e43895ec1f4 ("[SCSI] be2iscsi: adding functionality to change network settings using iscsiadm")
Signed-off-by: Lin Ma <linma@zju.edu.cn>
Link: https://lore.kernel.org/r/20230723075938.3713864-1-linma@zju.edu.cn
Reviewed-by: Chris Leech <cleech@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/scsi/be2iscsi/be_iscsi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/be2iscsi/be_iscsi.c b/drivers/scsi/be2iscsi/be_iscsi.c index c8f0a2144b44..818a690771e0 100644 --- a/drivers/scsi/be2iscsi/be_iscsi.c +++ b/drivers/scsi/be2iscsi/be_iscsi.c @@ -445,6 +445,10 @@ int beiscsi_iface_set_param(struct Scsi_Host *shost, } nla_for_each_attr(attrib, data, dt_len, rm_len) { + /* ignore nla_type as it is never used */ + if (nla_len(attrib) < sizeof(*iface_param)) + return -EINVAL; + iface_param = nla_data(attrib); if (iface_param->param_type != ISCSI_NET_PARAM) |