Re: [PATCH] sctp: detect and prevent references to a freed transport in sendmsg

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Paolo Abeni <pabeni@xxxxxxxxxx>:

On Fri, 04 Apr 2025 16:53:21 +0200 you wrote:
> sctp_sendmsg() re-uses associations and transports when possible by
> doing a lookup based on the socket endpoint and the message destination
> address, and then sctp_sendmsg_to_asoc() sets the selected transport in
> all the message chunks to be sent.
> 
> There's a possible race condition if another thread triggers the removal
> of that selected transport, for instance, by explicitly unbinding an
> address with setsockopt(SCTP_SOCKOPT_BINDX_REM), after the chunks have
> been set up and before the message is sent. This can happen if the send
> buffer is full, during the period when the sender thread temporarily
> releases the socket lock in sctp_wait_for_sndbuf().
> 
> [...]

Here is the summary with links:
  - sctp: detect and prevent references to a freed transport in sendmsg
    https://git.kernel.org/netdev/net/c/f1a69a940de5

You are awesome, thank you!
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