Re: [PATCH 5.15,5.10,5.4,4.19] netfilter: nft_tproxy: restrict to prerouting hook

On Thu, Feb 16, 2023 at 08:47:55PM +0800, Qingfang DENG wrote:

From: Florian Westphal fw@strlen.de

commit 18bbc3213383a82b05383827f4b1b882e3f0a5a5 upstream.

TPROXY is only allowed from prerouting, but nft_tproxy doesn't check this. This fixes a crash (null dereference) when using tproxy from e.g. output.

Fixes: 4ed8eb6570a4 ("netfilter: nf_tables: Add native tproxy support") Reported-by: Shell Chen xierch@gmail.com Signed-off-by: Florian Westphal fw@strlen.de Signed-off-by: Qingfang DENG dqfext@gmail.com

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net/netfilter/nft_tproxy.c | 8 ++++++++ 1 file changed, 8 insertions(+)

Now queued up, thanks.

greg k-h