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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-04-28 16:19:39 +0300 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2020-04-29 22:12:16 -0400 |
| commit | 4a4c0cfb4be74e216dd4446b254594707455bfc6 (patch) | |
| tree | 2f79bb9b72f7e4d11d5417b6fa300c25cf2162b8 /drivers/scsi/qedi | |
| parent | 78b874b7cbf09fbfadfa5f18a347ebef7bbb49fe (diff) | |
| download | linux-4a4c0cfb4be74e216dd4446b254594707455bfc6.tar.gz linux-4a4c0cfb4be74e216dd4446b254594707455bfc6.tar.bz2 linux-4a4c0cfb4be74e216dd4446b254594707455bfc6.zip | |
scsi: qedi: Check for buffer overflow in qedi_set_path()
Smatch complains that the "path_data->handle" variable is user controlled.
It comes from iscsi_set_path() so that seems possible. It's harmless to
add a limit check.
The qedi->ep_tbl[] array has qedi->max_active_conns elements (which is
always ISCSI_MAX_SESS_PER_HBA (4096) elements). The array is allocated in
the qedi_cm_alloc_mem() function.
Link: https://lore.kernel.org/r/20200428131939.GA696531@mwanda
Fixes: ace7f46ba5fd ("scsi: qedi: Add QLogic FastLinQ offload iSCSI driver framework.")
Acked-by: Manish Rangankar <mrangankar@marvell.com>
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qedi')
| -rw-r--r-- | drivers/scsi/qedi/qedi_iscsi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/scsi/qedi/qedi_iscsi.c b/drivers/scsi/qedi/qedi_iscsi.c index b867a143d263..425e665ec08b 100644 --- a/drivers/scsi/qedi/qedi_iscsi.c +++ b/drivers/scsi/qedi/qedi_iscsi.c @@ -1221,6 +1221,10 @@ static int qedi_set_path(struct Scsi_Host *shost, struct iscsi_path *path_data) } iscsi_cid = (u32)path_data->handle; + if (iscsi_cid >= qedi->max_active_conns) { + ret = -EINVAL; + goto set_path_exit; + } qedi_ep = qedi->ep_tbl[iscsi_cid]; QEDI_INFO(&qedi->dbg_ctx, QEDI_LOG_INFO, "iscsi_cid=0x%x, qedi_ep=%p\n", iscsi_cid, qedi_ep); |