Given the following code containing errors, provide Common Weakness Enumeration (CWE) identifiers and corresponding messages in JSON format. Each identified weakness should have a unique entry in the JSON array.
    Code: int htc_connect_service(struct htc_target *target,
		     struct htc_service_connreq *service_connreq,
		     enum htc_endpoint_id *conn_rsp_epid)
{
	struct sk_buff *skb;
	struct htc_endpoint *endpoint;
	struct htc_conn_svc_msg *conn_msg;
	int ret;
	unsigned long time_left;

	/* Find an available endpoint */
	endpoint = get_next_avail_ep(target->endpoint);
	if (!endpoint) {
		dev_err(target->dev, "Endpoint is not available for service %d\n",
			service_connreq->service_id);
		return -EINVAL;
	}

	endpoint->service_id = service_connreq->service_id;
	endpoint->max_txqdepth = service_connreq->max_send_qdepth;
	endpoint->ul_pipeid = service_to_ulpipe(service_connreq->service_id);
	endpoint->dl_pipeid = service_to_dlpipe(service_connreq->service_id);
	endpoint->ep_callbacks = service_connreq->ep_callbacks;

	skb = alloc_skb(sizeof(struct htc_conn_svc_msg) +
			    sizeof(struct htc_frame_hdr), GFP_ATOMIC);
	if (!skb) {
		dev_err(target->dev, "Failed to allocate buf to send"
			"service connect req\n");
		return -ENOMEM;
	}

	skb_reserve(skb, sizeof(struct htc_frame_hdr));

	conn_msg = skb_put(skb, sizeof(struct htc_conn_svc_msg));
	conn_msg->service_id = cpu_to_be16(service_connreq->service_id);
	conn_msg->msg_id = cpu_to_be16(HTC_MSG_CONNECT_SERVICE_ID);
	conn_msg->con_flags = cpu_to_be16(service_connreq->con_flags);
	conn_msg->dl_pipeid = endpoint->dl_pipeid;
	conn_msg->ul_pipeid = endpoint->ul_pipeid;

	ret = htc_issue_send(target, skb, skb->len, 0, ENDPOINT0);
	if (ret)
		goto err;

	time_left = wait_for_completion_timeout(&target->cmd_wait, HZ);
	if (!time_left) {
		dev_err(target->dev, "Service connection timeout for: %d\n",
			service_connreq->service_id);
		kfree_skb(skb);
		return -ETIMEDOUT;
	}

	*conn_rsp_epid = target->conn_rsp_epid;
	return 0;
err:
	kfree_skb(skb);
	return ret;
} ; Sample JSON Format Confermily Expected output: "examples" => "cwe": "xxx"; "message": "xxx"
    
 'cwe': ['CWE-416'], 'message': 'ath9k: Fix use-after-free Read in htc_connect_service

The skb is consumed by htc_send_epid, so it needn't release again.

The case reported by syzbot:

https://lore.kernel.org/linux-usb/000000000000590f6b05a1c05d15@google.com
usb 1-1: ath9k_htc: Firmware ath9k_htc/htc_9271-1.4.0.fw requested
usb 1-1: ath9k_htc: Transferred FW: ath9k_htc/htc_9271-1.4.0.fw, size:
51008
usb 1-1: Service connection timeout for: 256
==================================================================
BUG: KASAN: use-after-free in atomic_read
include/asm-generic/atomic-instrumented.h:26 [inline]
BUG: KASAN: use-after-free in refcount_read include/linux/refcount.h:134
[inline]
BUG: KASAN: use-after-free in skb_unref include/linux/skbuff.h:1042
[inline]
BUG: KASAN: use-after-free in kfree_skb+0x32/0x3d0 net/core/skbuff.c:692
Read of size 4 at addr ffff8881d0957994 by task kworker/1:2/83

Call Trace:
kfree_skb+0x32/0x3d0 net/core/skbuff.c:692
htc_connect_service.cold+0xa9/0x109
drivers/net/wireless/ath/ath9k/htc_hst.c:282
ath9k_wmi_connect+0xd2/0x1a0 drivers/net/wireless/ath/ath9k/wmi.c:265
ath9k_init_htc_services.constprop.0+0xb4/0x650
drivers/net/wireless/ath/ath9k/htc_drv_init.c:146
ath9k_htc_probe_device+0x25a/0x1d80
drivers/net/wireless/ath/ath9k/htc_drv_init.c:959
ath9k_htc_hw_init+0x31/0x60
drivers/net/wireless/ath/ath9k/htc_hst.c:501
ath9k_hif_usb_firmware_cb+0x26b/0x500
drivers/net/wireless/ath/ath9k/hif_usb.c:1187
request_firmware_work_func+0x126/0x242
drivers/base/firmware_loader/main.c:976
process_one_work+0x94b/0x1620 kernel/workqueue.c:2264
worker_thread+0x96/0xe20 kernel/workqueue.c:2410
kthread+0x318/0x420 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Allocated by task 83:
kmem_cache_alloc_node+0xdc/0x330 mm/slub.c:2814
__alloc_skb+0xba/0x5a0 net/core/skbuff.c:198
alloc_skb include/linux/skbuff.h:1081 [inline]
htc_connect_service+0x2cc/0x840
drivers/net/wireless/ath/ath9k/htc_hst.c:257
ath9k_wmi_connect+0xd2/0x1a0 drivers/net/wireless/ath/ath9k/wmi.c:265
ath9k_init_htc_services.constprop.0+0xb4/0x650
drivers/net/wireless/ath/ath9k/htc_drv_init.c:146
ath9k_htc_probe_device+0x25a/0x1d80
drivers/net/wireless/ath/ath9k/htc_drv_init.c:959
ath9k_htc_hw_init+0x31/0x60
drivers/net/wireless/ath/ath9k/htc_hst.c:501
ath9k_hif_usb_firmware_cb+0x26b/0x500
drivers/net/wireless/ath/ath9k/hif_usb.c:1187
request_firmware_work_func+0x126/0x242
drivers/base/firmware_loader/main.c:976
process_one_work+0x94b/0x1620 kernel/workqueue.c:2264
worker_thread+0x96/0xe20 kernel/workqueue.c:2410
kthread+0x318/0x420 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Freed by task 0:
kfree_skb+0x102/0x3d0 net/core/skbuff.c:690
ath9k_htc_txcompletion_cb+0x1f8/0x2b0
drivers/net/wireless/ath/ath9k/htc_hst.c:356
hif_usb_regout_cb+0x10b/0x1b0
drivers/net/wireless/ath/ath9k/hif_usb.c:90
__usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650
usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716
dummy_timer+0x1258/0x32ae drivers/usb/gadget/udc/dummy_hcd.c:1966
call_timer_fn+0x195/0x6f0 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1786
__do_softirq+0x21e/0x950 kernel/softirq.c:292

Reported-and-tested-by: syzbot+9505af1ae303dabdc646@syzkaller.appspotmail.com
Signed-off-by: Qiujun Huang <hqjagain@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20200404041838.10426-2-hqjagain@gmail.com'