netfilter: nf_reject: skip iphdr options when looking for icmp header

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[ Upstream commit af8d6ae09c ]

Not a big deal but this hould have used the real ip header length and not the
base header size.  As-is, if there are options then
nf_skb_is_icmp_unreach() result will be random.

Fixes: db99b2f2b3 ("netfilter: nf_reject: don't reply to icmp error messages")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Florian Westphal 2026-06-18 10:49:24 +02:00 • committed by Greg Kroah-Hartman

parent 6e98407cb9

commit 392baa440e

1 changed files with 1 additions and 1 deletions

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net/ipv4/netfilter/nf_reject_ipv4.c

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