Thread (2 messages) 2 messages, 2 authors, 6d ago

Re: [PATCH net] sctp: fix addr_wq_timer race in sctp_free_addr_wq()

From: patchwork-bot+netdevbpf@kernel.org
Date: 2026-07-01 00:10:21
Also in: linux-sctp

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski [off-list ref]:

On Mon, 29 Jun 2026 14:31:14 -0400 you wrote:
sctp_free_addr_wq() previously removed addr_wq_timer using timer_delete()
while holding addr_wq_lock. However, timer_delete() does not guarantee that
a currently running timer handler has completed.

This allows a race with sctp_addr_wq_timeout_handler(), where the handler
may still run after addr_waitq has been freed, acquire addr_wq_lock, and
access freed memory, leading to a use-after-free.

[...]
Here is the summary with links:
  - [net] sctp: fix addr_wq_timer race in sctp_free_addr_wq()
    https://git.kernel.org/netdev/net/c/976c19de0f22

You are awesome, thank you!
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