add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/net/wireless/mac80211_hwsim.c
..
..
@@ -3625,12 +3625,13 @@
3625
3625
 	frame_data_len = nla_len(info->attrs[HWSIM_ATTR_FRAME]);
3626
3626
 	frame_data = (void *)nla_data(info->attrs[HWSIM_ATTR_FRAME]);
3627
3627
 
3628
+	if (frame_data_len < sizeof(struct ieee80211_hdr_3addr) ||
3629
+	    frame_data_len > IEEE80211_MAX_DATA_LEN)
3630
+		goto err;
3631
+
3628
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 	/* Allocate new skb here */
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3633
 	skb = alloc_skb(frame_data_len, GFP_KERNEL);
3630
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 	if (skb == NULL)
3631
-		goto err;
3632
-
3633
-	if (frame_data_len > IEEE80211_MAX_DATA_LEN)
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 		goto err;
3635
3636
 
3636
3637
 	/* Copy the data */