netfilter: nf_tables: validate registers coming from userspace.
[ 6e1acfa3 ] Bail out in case userspace uses unsupported registers. Fixes: 49499c3e ("netfilter: nf_tables: switch registers to 32 bit addressing") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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