Hello:

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

On Tue,  5 Jul 2022 20:56:10 +0800 you wrote:

There are UAF bugs caused by rose_t0timer_expiry(). The
root cause is that del_timer() could not stop the timer
handler that is running and there is no synchronization.
One of the race conditions is shown below:

    (thread 1)             |        (thread 2)
                           | rose_device_event
                           |   rose_rt_device_down
                           |     rose_remove_neigh
rose_t0timer_expiry        |       rose_stop_t0timer(rose_neigh)
  ...                      |         del_timer(&neigh->t0timer)
                           |         kfree(rose_neigh) //[1]FREE
  neigh->dce_mode //[2]USE |

[...]

Here is the summary with links:
  - [net,v2] net: rose: fix UAF bug caused by rose_t0timer_expiry
    https://git.kernel.org/netdev/net/c/148ca0451807

You are awesome, thank you!
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