int wvlan_rts(struct rtsreq *rrq, __u32 io_base)
{
	int ioctl_ret = 0;
	/*------------------------------------------------------------------------*/


	DBG_FUNC("wvlan_rts");
	DBG_ENTER(DbgInfo);


	DBG_PRINT("io_base: 0x%08x\n", io_base);

	switch (rrq->typ) {
	case WL_IOCTL_RTS_READ:
		DBG_TRACE(DbgInfo, "IOCTL: WVLAN2_IOCTL_RTS -- WL_IOCTL_RTS_READ\n");
		rrq->data[0] = IN_PORT_WORD(io_base + rrq->reg);
		DBG_TRACE(DbgInfo, "  reg 0x%04x ==> 0x%04x\n", rrq->reg, CNV_LITTLE_TO_SHORT(rrq->data[0]));
		break;
	case WL_IOCTL_RTS_WRITE:
		DBG_TRACE(DbgInfo, "IOCTL: WVLAN2_IOCTL_RTS -- WL_IOCTL_RTS_WRITE\n");
		OUT_PORT_WORD(io_base + rrq->reg, rrq->data[0]);
		DBG_TRACE(DbgInfo, "  reg 0x%04x <== 0x%04x\n", rrq->reg, CNV_LITTLE_TO_SHORT(rrq->data[0]));
		break;
	case WL_IOCTL_RTS_BATCH_READ:
		DBG_TRACE(DbgInfo, "IOCTL: WVLAN2_IOCTL_RTS -- WL_IOCTL_RTS_BATCH_READ\n");
		IN_PORT_STRING_16(io_base + rrq->reg, rrq->data, rrq->len);
		DBG_TRACE(DbgInfo, "  reg 0x%04x ==> %d bytes\n", rrq->reg, rrq->len * sizeof(__u16));
		break;
	case WL_IOCTL_RTS_BATCH_WRITE:
		DBG_TRACE(DbgInfo, "IOCTL: WVLAN2_IOCTL_RTS -- WL_IOCTL_RTS_BATCH_WRITE\n");
		OUT_PORT_STRING_16(io_base + rrq->reg, rrq->data, rrq->len);
		DBG_TRACE(DbgInfo, "  reg 0x%04x <== %d bytes\n", rrq->reg, rrq->len * sizeof(__u16));
		break;
	default:

		DBG_TRACE(DbgInfo, "IOCTL: WVLAN2_IOCTL_RTS -- UNSUPPORTED RTS CODE: 0x%X", rrq->typ);
		ioctl_ret = -EOPNOTSUPP;
		break;
	}

	DBG_LEAVE(DbgInfo);
	return ioctl_ret;
} /* wvlan_rts */

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.