netfilter: x_tables: make sure e->next_offset covers remaining blob size
Otherwise this function may read data beyond the ruleset blob. Change-Id: I22f514057d3e0403d1af61f4d9555403ab9f72ea Signed-off-by:Florian Westphal <fw@strlen.de> Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org>
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