linux-kernel - Re: [PATCH] ASoC: core: Fix use-after-free in snd_soc

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Message-Id: <166697367874.746166.7503879951900455151.b4-ty@kernel.org>
Date:   Fri, 28 Oct 2022 17:14:38 +0100
From:   Mark Brown <broonie@...nel.org>
To:     linux-kernel@...r.kernel.org,
        Chen Zhongjin <chenzhongjin@...wei.com>,
        alsa-devel@...a-project.org
Cc:     tiwai@...e.com, perex@...ex.cz, lgirdwood@...il.com
Subject: Re: [PATCH] ASoC: core: Fix use-after-free in snd_soc_exit()

On Fri, 28 Oct 2022 11:16:03 +0800, Chen Zhongjin wrote:
> KASAN reports a use-after-free:
> 
> BUG: KASAN: use-after-free in device_del+0xb5b/0xc60
> Read of size 8 at addr ffff888008655050 by task rmmod/387
> CPU: 2 PID: 387 Comm: rmmod
> Hardware name: QEMU Standard PC (i440FX + PIIX, 1996)
> Call Trace:
> <TASK>
> dump_stack_lvl+0x79/0x9a
> print_report+0x17f/0x47b
> kasan_report+0xbb/0xf0
> device_del+0xb5b/0xc60
> platform_device_del.part.0+0x24/0x200
> platform_device_unregister+0x2e/0x40
> snd_soc_exit+0xa/0x22 [snd_soc_core]
> __do_sys_delete_module.constprop.0+0x34f/0x5b0
> do_syscall_64+0x3a/0x90
> entry_SYSCALL_64_after_hwframe+0x63/0xcd
> ...
> </TASK>
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next

Thanks!

[1/1] ASoC: core: Fix use-after-free in snd_soc_exit()
      commit: 6ec27c53886c8963729885bcf2dd996eba2767a7

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark