add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/net/wireless/wext-core.c
..
..
@@ -796,6 +796,12 @@
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 		}
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 	}
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+	/* Sanity-check to ensure we never end up _allocating_ zero
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+	 * bytes of data for extra.
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+	 */
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+	if (extra_size <= 0)
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+		return -EFAULT;
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+
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 	/* kzalloc() ensures NULL-termination for essid_compat. */
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 	extra = kzalloc(extra_size, GFP_KERNEL);
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 	if (!extra)