Re: [PATCH v2] atm: lec: fix use-after-free in sock_def_readable()

[patchwork-bot+netdevbpf]

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@xxxxxxxxxx>:

On Mon,  9 Mar 2026 21:29:08 +0530 you wrote:
> A race condition exists between lec_atm_close() setting priv->lecd
> to NULL and concurrent access to priv->lecd in send_to_lecd(),
> lec_handle_bridge(), and lec_atm_send(). When the socket is freed
> via RCU while another thread is still using it, a use-after-free
> occurs in sock_def_readable() when accessing the socket's wait queue.
> 
> The root cause is that lec_atm_close() clears priv->lecd without
> any synchronization, while callers dereference priv->lecd without
> any protection against concurrent teardown.
> 
> [...]

Here is the summary with links:
  - [v2] atm: lec: fix use-after-free in sock_def_readable()
    https://git.kernel.org/netdev/net/c/922814879542

You are awesome, thank you!
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