netfilter: x_tables: validate e->target_offset early

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commit bdf533de69 upstream.

We should check that e->target_offset is sane before
mark_source_chains gets called since it will fetch the target entry
for loop detection.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Florian Westphal 2016-03-22 18:02:49 +01:00 • committed by Greg Kroah-Hartman

parent ccb85835a1

commit 59ff9f9b38

3 changed files with 24 additions and 27 deletions

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17

net/ipv4/netfilter/arp_tables.c

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17

net/ipv4/netfilter/ip_tables.c

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17

net/ipv6/netfilter/ip6_tables.c

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