Re: [PATCH] Bluetooth: ISO: avoid NULL deref of conn in iso_conn_big_sync()

[patchwork-bot+bluetooth]

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>:

On Sun, 21 Jun 2026 21:23:05 +0500 you wrote:
> iso_conn_big_sync() drops the socket lock to call hci_get_route() and
> then re-acquires it, but dereferences iso_pi(sk)->conn->hcon afterwards
> without re-checking that conn is still valid.
> 
> While the lock is dropped, the connection can be torn down under the
> same socket lock: iso_disconn_cfm() -> iso_conn_del() -> iso_chan_del()
> sets iso_pi(sk)->conn to NULL (and the broadcast teardown path can also
> clear conn->hcon on its own). When iso_conn_big_sync() re-acquires the
> lock and reads conn->hcon, conn may be NULL, causing a NULL pointer
> dereference (hcon is the first member of struct iso_conn).
> 
> [...]

Here is the summary with links:
  - Bluetooth: ISO: avoid NULL deref of conn in iso_conn_big_sync()
    https://git.kernel.org/bluetooth/bluetooth-next/c/a0ac2b200be1

You are awesome, thank you!
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