On Thursday, December 5, 2019 10:55 AM, Jason A. Donenfeld <[email protected]>
wrote:
> Hello,
>
> A new snapshot, `0.0.20191205`, has been tagged in the git repository.
>
> Please note that this snapshot is a snapshot rather than a final
> release that is considered secure and bug-free. WireGuard is generally
> thought to be fairly stable, and most likely will not crash your
> computer (though it may). However, as this is a snapshot, it comes
> with no guarantees; it is not applicable for CVEs.
>
> With all that said, if you'd like to test this snapshot out, there are a
> few relevant changes.
>
> == Changes ==
>
> - wg-quick: linux: suppress error when finding unused table
>
> This fixes a spurious warning messages seen with recent versions of
> iproute2
> and kernels.
>
> - wg-quick: linux: ensure postdown hooks execute
> - wg-quick: linux: have remove_iptables return true
> - wg-quick: linux: iptables-* -w is not widely supported
>
> Adding in iptables had some hiccups. For the record, I'm very unhappy
> about
> having to put any firewalling code into wg-quick(8). We'll of course need
> to
> support nftables too at some point if this continues. I'm investigating
> with
> upstream the possibility of adding a sysctl to patch the issue that
> iptables
> is handling now, so hopefully at somepoint down the line we'll be able to
> shed
> this dependency once again.
>
> - send: use kfree_skb_list
> - device: prepare skb_list_walk_safe for upstreaming
> - send: avoid touching skb->{next,prev} directly
>
> Suggestions from LKML.
>
> - ipc: make sure userspace communication frees wgdevice
>
> Free things properly on error paths.
>
> This snapshot contains commits from: Jason A. Donenfeld.
>
> As always, the source is available at https://git.zx2c4.com/WireGuard/ and
> information about the project is available at https://www.wireguard.com/ .
>
> This snapshot is available in compressed tarball form here:
> https://git.zx2c4.com/WireGuard/snapshot/WireGuard-0.0.20191205.tar.xz
> SHA2-256:
> BLAKE2b-256:
>
> A PGP signature of that file decompressed is available here:
> https://git.zx2c4.com/WireGuard/snapshot/WireGuard-0.0.20191205.tar.asc
> Signing key: AB9942E6D4A4CFC3412620A749FC7012A5DE03AE
>
> If you're a snapshot package maintainer, please bump your package
> version. If
> you're a user, the WireGuard team welcomes any and all feedback on this
> latest
> snapshot.
>
> Finally, WireGuard development thrives on donations. By popular demand, we
> have a webpage for this: https://www.wireguard.com/donations/
>
> Thank you,
> Jason Donenfeld
>
Hi, this release cause coredump on wg-quick down action:
systemd[1]: Stopping WireGuard via wg-quick(8) for wg0...
wg-quick[2241]: [#] iptables -D OUTPUT -o wg0 -j ACCEPT
wg-quick[2241]: [#] ip -4 rule delete table 51820
wg-quick[2241]: [#] ip -4 rule delete table main suppress_prefixlength 0
wg-quick[2257]: RTNETLINK answers: Address family not supported by protocol
wg-quick[2257]: Dump terminated
wg-quick[2258]: RTNETLINK answers: Address family not supported by protocol
wg-quick[2258]: Dump terminated
wg-quick[2241]: [#] ip link delete dev wg0
wg-quick[2241]: [#] resolvconf -d wg0 -f
wg-quick[2315]: [#] iptables-restore -n
audit[2316]: ANOM_ABEND auid=4294967295 uid=0 gid=0 ses=4294967295
subj==unconfined pid=2316 comm="iptables-restor"
exe="/usr/bin/xtables-nft-multi" sig=11 res=1
wg-quick[2315]: /usr/bin/wg-quick: line 29: 2316 Segmentation fault (core
dumped) "$@"
kernel: show_signal_msg: 40 callbacks suppressed
kernel: iptables-restor[2316]: segfault at 0 ip 000064515b66fcc9 sp
00007e6bbcbfb720 error 4 in libnftnl.so.11.2.0[64515b66d000+18000]
kernel: Code: 15 5c 20 02 00 48 85 c0 74 07 48 89 00 48 89 40 08 48 83 c4 08 c3
66 66 2e 0f 1f 84 00 00 00 00 00 55 48 89 fd 53 48 83 ec 08 <48> 8b 3f 48 8b 1f
48 39 fd 74 2f 0f 1f 40 00 48 8b 47 08 48 89 43
systemd[1]: [email protected]: Succeeded.
systemd[1]: Stopped WireGuard via wg-quick(8) for wg0.
I saw some iptables related fix in git[1] but I don't know if
it's related to similar issue.
[1]
https://git.zx2c4.com/WireGuard/commit/?id=884b6e36e6af0c6fa5b9467ccc8c2e2e4477bc95
Jordan
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