[PATCH net 0/6,v3] Netfilter fixes for net

[Pablo Neira Ayuso <pablo@netfilter.org>]

v3: fixes checkpatch warning in 4/6 on use of space instead of indentation.

-o-

Hi,

The following patchset contains Netfilter fixes for net:

Patch #1 syzbot reports that nf_reinject() could be called without
         rcu_read_lock() when flushing pending packets at nfnetlink
         queue removal, from Eric Dumazet.

Patch #2 flushes ipset list:set when canceling garbage collection to
         reference to other lists to fix a race, from Jozsef Kadlecsik.

Patch #3 restores q-in-q matching with nft_payload by reverting
         f6ae9f120dad ("netfilter: nft_payload: add C-VLAN support").

Patch #4 fixes vlan mangling in skbuff when vlan offload is present
         in skbuff, without this patch nft_payload corrupts packets
         in this case.

Patch #5 fixes possible nul-deref in tproxy no IP address is found in
         netdevice, reported by syzbot and patch from Florian Westphal.

Patch #6 removes a superfluous restriction which prevents loose fib
         lookups from input and forward hooks, from Eric Garver.

My assessment is that patches #1, #2 and #5 address possible kernel
crash, anything else in this batch fixes broken features.

Please, pull these changes from:

  git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git nf-24-05-29

Thanks.

----------------------------------------------------------------

The following changes since commit 4b377b4868ef17b040065bd468668c707d2477a5:

  kprobe/ftrace: fix build error due to bad function definition (2024-05-17 19:17:55 -0700)

are available in the Git repository at:

  git://git.kernel.org/pub/scm/linux/kernel/git/netfilter/nf.git tags/nf-24-05-29

for you to fetch changes up to e8ded22ef0f4831279c363c264cd41cd9d59ca9e:

  netfilter: nft_fib: allow from forward/input without iif selector (2024-05-29 00:37:51 +0200)

----------------------------------------------------------------
netfilter pull request 24-05-29

----------------------------------------------------------------
Alexander Maltsev (1):
      netfilter: ipset: Add list flush to cancel_gc

Eric Dumazet (1):
      netfilter: nfnetlink_queue: acquire rcu_read_lock() in instance_destroy_rcu()

Eric Garver (1):
      netfilter: nft_fib: allow from forward/input without iif selector

Florian Westphal (1):
      netfilter: tproxy: bail out if IP has been disabled on the device

Pablo Neira Ayuso (2):
      netfilter: nft_payload: restore vlan q-in-q match support
      netfilter: nft_payload: skbuff vlan metadata mangle support

 net/ipv4/netfilter/nf_tproxy_ipv4.c   |  2 +
 net/netfilter/ipset/ip_set_list_set.c |  3 ++
 net/netfilter/nfnetlink_queue.c       |  2 +
 net/netfilter/nft_fib.c               |  8 ++-
 net/netfilter/nft_payload.c           | 95 ++++++++++++++++++++++++++---------
 5 files changed, 82 insertions(+), 28 deletions(-)