Merge tag 'ipsec-2026-06-10' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec

Steffen Klassert says:

====================
pull request (net): ipsec 2026-06-10

1) xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()
   Propagate SKBFL_SHARED_FRAG when paged fragments are moved between
   skbs so ESP can decide whether in-place crypto is safe.

2) xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload
   Replace the unlocked read of xtfs->ra_newskb with a local flag so a
   concurrent reassembly can no longer free first_skb between
   spin_unlock and the post-loop check.

3) xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()
   Prune the inexact bin under xfrm_policy_lock so a concurrent
   xfrm_hash_rebuild() can no longer free it before xfrm_policy_kill()
   dereferences it.

4) xfrm: iptfs: fix ABBA deadlock in iptfs_destroy_state()
   Move hrtimer_cancel() for the output and drop timers ahead of their
   spinlocks, breaking the softirq/lock cycle that could deadlock
   against the timer callbacks on SMP.

5) xfrm: espintcp: do not reuse an in-progress partial send
   Fail a new send when espintcp_push_msgs() returns with emsg->len
   still set, so a blocking caller can no longer overwrite ctx->partial
   while a previous transfer still owns it.

6) esp: fix page frag reference leak on skb_to_sgvec failure
   Add a flag to esp_ssg_unref() to unconditionally unref the source
   scatterlist, releasing the old page references that are otherwise
   leaked when the second skb_to_sgvec() in esp_output_tail() fails.

Please pull or let me know if there are problems.

ipsec-2026-06-10

* tag 'ipsec-2026-06-10' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec:
  esp: fix page frag reference leak on skb_to_sgvec failure
  xfrm: espintcp: do not reuse an in-progress partial send
  xfrm: iptfs: fix ABBA deadlock in iptfs_destroy_state()
  xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()
  xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload
  xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()
====================

Link: https://patch.msgid.link/20260610140800.2562818-1-steffen.klassert@secunet.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

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