 Alfonso Acosta
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89a0ab6799
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Fix test data and improve /proc/net/tcp header parsing
The header checking code was unsafe because:
1. It was accessing the byteslice at [2] without ensuring a length >= 3
2. It was assuming that the indentation of the 'sl' header is always 2 (which seems to be the case in recent kernels https://github.com/torvalds/linux/blob/8f18e4d03ed8fa5e4a300c94550533bd8ce4ff9a/net/ipv4/tcp_ipv4.c#L2304 and https://github.com/torvalds/linux/blob/8f18e4d03ed8fa5e4a300c94550533bd8ce4ff9a/net/ipv6/tcp_ipv6.c#L1831 ) but it's more robust to simply trim the byteslice.
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2017-01-04 00:27:16 +00:00 |
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Tom Wilkie