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Date:   Fri, 30 Sep 2022 11:40:16 +0000
To:     Duoming Zhou <>
Subject: Re: [PATCH V4] mISDN: fix use-after-free bugs in l1oip timer handlers


This patch was applied to netdev/net.git (master)
by David S. Miller <>:

On Wed, 28 Sep 2022 21:39:38 +0800 you wrote:
> The l1oip_cleanup() traverses the l1oip_ilist and calls
> release_card() to cleanup module and stack. However,
> release_card() calls del_timer() to delete the timers
> such as keep_tl and timeout_tl. If the timer handler is
> running, the del_timer() will not stop it and result in
> UAF bugs. One of the processes is shown below:
> [...]

Here is the summary with links:
  - [V4] mISDN: fix use-after-free bugs in l1oip timer handlers

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