linux-kernel - Re: [PATCH] ALSA: firewire-motu: add bounds check in put

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <878qfct9le.wl-tiwai@suse.de>
Date: Tue, 09 Dec 2025 08:09:33 +0100
From: Takashi Iwai <tiwai@...e.de>
To: Junrui Luo <moonafterrain@...look.com>
Cc: Clemens Ladisch <clemens@...isch.de>,
	Takashi Sakamoto <o-takashi@...amocchi.jp>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Takashi Iwai <tiwai@...e.de>,
	linux-sound@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ALSA: firewire-motu: add bounds check in put_user loop for DSP events

On Tue, 09 Dec 2025 06:16:41 +0100,
Junrui Luo wrote:
> 
> In the DSP event handling code, a put_user() loop copies event data.
> When the user buffer size is not aligned to 4 bytes, it could overwrite
> beyond the buffer boundary.
> 
> Fix by adding a bounds check before put_user().
> 
> Suggested-by: Takashi Iwai <tiwai@...e.de>
> Fixes: 634ec0b2906e ("ALSA: firewire-motu: notify event for parameter change in register DSP model")
> Signed-off-by: Junrui Luo <moonafterrain@...look.com>

Applied now.  Thanks.


Takashi