diff --git a/drivers/scsi/qla2xxx/qla_iocb.c b/drivers/scsi/qla2xxx/qla_iocb.c
index 8bd7c94d7c7c..c4595626c16b 100644
--- a/drivers/scsi/qla2xxx/qla_iocb.c
+++ b/drivers/scsi/qla2xxx/qla_iocb.c
@@ -4126,6 +4126,12 @@ qla25xx_ctrlvp_iocb(srb_t *sp, void *pkt)
 	vce->entry_count = 1;
 	vce->command = cpu_to_le16(sp->u.iocb_cmd.u.ctrlvp.cmd);
 	vce->vp_count = cpu_to_le16(1);
+	if (map >= ARRAY_SIZE(vce->vp_idx_map)) {
+		ql_log(ql_log_warn, sp->vha, 0x307c,
+		       "ctrlvp: vp_index %u exceeds vp_idx_map capacity\n",
+		       sp->u.iocb_cmd.u.ctrlvp.vp_index);
+		return;
+	}
 	vce->vp_idx_map[map] |= 1 << pos;
 }
 
diff --git a/drivers/scsi/qla2xxx/qla_mid.c b/drivers/scsi/qla2xxx/qla_mid.c
index 7072af5b4217..b7d9c1a53f3c 100644
--- a/drivers/scsi/qla2xxx/qla_mid.c
+++ b/drivers/scsi/qla2xxx/qla_mid.c
@@ -987,6 +987,14 @@ int qla24xx_control_vp(scsi_qla_host_t *vha, int cmd)
 	if (vp_index == 0 || vp_index >= ha->max_npiv_vports)
 		return QLA_PARAMETER_ERROR;
 
+	/*
+	 * The VP_CTRL IOCB selects the target VP through a fixed 128-bit
+	 * (16-byte) vp_idx_map bitmap, so vp_index must fit within it even
+	 * if firmware advertises more NPIV vports.
+	 */
+	if (vp_index > sizeof_field(struct vp_ctrl_entry_24xx, vp_idx_map) * 8)
+		return QLA_PARAMETER_ERROR;
+
 	/* ref: INIT */
 	sp = qla2x00_get_sp(base_vha, NULL, GFP_KERNEL);
 	if (!sp)