linux-kernel - Re: [Kernel Bug] KASAN: slab-use-after-free Read in loopback

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Message-ID: <87a4xply0d.wl-tiwai@suse.de>
Date: Tue, 03 Feb 2026 15:09:22 +0100
From: Takashi Iwai <tiwai@...e.de>
To: 李龙兴 <coregee2000@...il.com>
Cc: syzkaller@...glegroups.com,
	perex@...ex.cz,
	tiwai@...e.com,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [Kernel Bug] KASAN: slab-use-after-free Read in loopback_trigger

On Mon, 02 Feb 2026 07:27:45 +0100,
李龙兴 wrote:
> 
> Dear Linux kernel developers and maintainers,
> 
> We would like to report a new kernel bug found by our tool. KASAN:
> slab-use-after-free Read in loopback_trigger. Details are as follows.
> 
> Kernel commit: v6.18.2
> Kernel config: see attachment
> report: see attachment
> 
> We are currently analyzing the root cause and  working on a
> reproducible PoC. We will provide further updates in this thread as
> soon as we have more information.

Thanks for the report.  Judging from the stack trace, I believe it's
the same bug that was reported recently:
  https://lore.kernel.org/69783ba1.050a0220.c9109.0011.GAE@google.com

I'm going to submit a fix patch.


thanks,

Takashi