JP Abgrall 01c475ac39 ANDROID: netfilter: ipv6: fix crash caused by ipv6_find_hdr()
When calling:
    ipv6_find_hdr(skb, &thoff, -1, NULL)
on a fragmented packet, thoff would be left with a random
value causing callers to read random memory offsets with:
    skb_header_pointer(skb, thoff, ...)

Now we force ipv6_find_hdr() to return a failure in this case.
Calling:
  ipv6_find_hdr(skb, &thoff, -1, &fragoff)
will set fragoff as expected, and not return a failure.

Change-Id: Ib474e8a4267dd2b300feca325811330329684a88
Signed-off-by: JP Abgrall <jpa@google.com>
2017-07-17 10:27:40 +05:30
..
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