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| author | Lin Ma <linma@zju.edu.cn> | 2023-07-23 15:59:38 +0800 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2023-07-25 21:49:32 -0400 |
| commit | ee0268f230f66cb472df3424f380ea668da2749a (patch) | |
| tree | 7b6f8241d342ad180916848031b46d8c15288fee /drivers/scsi/be2iscsi | |
| parent | ce51c817008450ef4188471db31639d42d37a5e1 (diff) | |
| download | lwn-ee0268f230f66cb472df3424f380ea668da2749a.tar.gz lwn-ee0268f230f66cb472df3424f380ea668da2749a.zip | |
scsi: be2iscsi: Add length check when parsing nlattrs
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>
Diffstat (limited to 'drivers/scsi/be2iscsi')
| -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 8aeaddc93b16..8d374ae863ba 100644 --- a/drivers/scsi/be2iscsi/be_iscsi.c +++ b/drivers/scsi/be2iscsi/be_iscsi.c @@ -450,6 +450,10 @@ 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) |