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Date: Sat, 6 Apr 2019 18:34:19 +0200 From: Florian Westphal <fw@...len.de> To: Sasha Levin <sashal@...nel.org> Cc: Captain Wiggum <captwiggum@...il.com>, davem@...emloft.net, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Florian Westphal <fw@...len.de>, Eric Dumazet <edumazet@...gle.com>, Peter Oskolkov <posk@...gle.com>, netdev@...r.kernel.org, stable@...r.kernel.org Subject: Re: [PATCH net] ipv6: un-do: defrag: drop non-last frags smaller than min mtu Sasha Levin <sashal@...nel.org> wrote: > > > > Two patches from upstream needed first to cover the DoS: > > > > > > > > commit d4289fcc9b16b89619ee1c54f829e05e56de8b9a > > > > net: IP6 defrag: use rbtrees for IPv6 defrag > > > > > > > > commit 997dd96471641e147cb2c33ad54284000d0f5e35 > > > > net: IP6 defrag: use rbtrees in nf_conntrack_reasm.c [..] > I see that 0ed4229b08c1 ("ipv6: defrag: drop non-last frags smaller than > min mtu") wasn't reverted upstream, why is a revert needed on the stable > trees? As I already mentioned, reverting it brings back the DoS problem. The "drop < minmtu" restriction is removed in the two rbtree conversion patches quoted above.
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