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Groups > linux.debian.kernel > #74113

Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets

From Steffen Weinreich <steve@weinreich.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets
Date 2022-01-04 21:20 +0100
Message-ID <DBYrL-1jx-3@gated-at.bofh.it> (permalink)
References (3 earlier) <DBV0R-7yG-3@gated-at.bofh.it> <DBV0R-7yG-1@gated-at.bofh.it> <DBVtU-7Z0-9@gated-at.bofh.it> <Dz5zs-2p4-3@gated-at.bofh.it> <DBVtU-7Z0-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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Hi!
>> Regarding 4.19, the patch does not work there since the struct pkt does
>> not have a member fragoff. I suppose this is hidden deeply in the skbuf
>> structure...
> Sad. You might ask the maintainers if they can consider the fix as
> well for older stable series, mentioneing back the one you would be
> intersted in (so 4.19.y in your case). 

Thanks to a hint from Florian Westphal, i modified the patch for 4.19
and it fixes the issue also in 4.19.

The patch is attached.

cheerio

Steve

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Thread

Bug#1002706: linux-image-5.10.0-10-amd64: nftables stateless NAT in raw table mangles fragmented UDP packets Steffen Weinreich <steve@weinreich.org> - 2021-12-27 22:20 +0100
  Bug#1002706: nftables stateless NAT in raw table mangles fragmented UDP packets also reproducible in linux-image-5.16.0-rc7-amd64-unsigned Steffen Weinreich <steve@weinreich.org> - 2021-12-30 13:00 +0100
    Bug#1002706: nftables stateless NAT in raw table mangles fragmented UDP packets also reproducible in linux-image-5.16.0-rc7-amd64-unsigned Salvatore Bonaccorso <carnil@debian.org> - 2021-12-31 12:00 +0100
      Bug#1002706: nftables stateless NAT in raw table mangles fragmented UDP packets also reproducible in linux-image-5.16.0-rc7-amd64-unsigned Steffen Weinreich <steve@weinreich.org> - 2021-12-31 12:20 +0100
        Bug#1002706: nftables stateless NAT in raw table mangles fragmented UDP packets also reproducible in linux-image-5.16.0-rc7-amd64-unsigned Salvatore Bonaccorso <carnil@debian.org> - 2021-12-31 16:00 +0100
  Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets Steffen Weinreich <steve@weinreich.org> - 2022-01-04 17:40 +0100
    Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets Salvatore Bonaccorso <carnil@debian.org> - 2022-01-04 18:10 +0100
      Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets Steffen Weinreich <steve@weinreich.org> - 2022-01-04 21:20 +0100
        Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets Steffen Weinreich <steve@weinreich.org> - 2022-01-27 18:30 +0100
          Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets Salvatore Bonaccorso <carnil@debian.org> - 2022-01-27 22:30 +0100
            Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets Florian Westphal <fw@strlen.de> - 2022-01-27 23:30 +0100
              Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets Steffen Weinreich <steve@weinreich.org> - 2022-01-28 09:20 +0100
  Bug#1002706: Fwd: nftables stateless NAT in raw table mangles fragmented UDP packets Salvatore Bonaccorso <carnil@debian.org> - 2022-01-04 17:40 +0100

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