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From: Takashi Iwai <tiwai@suse.de>
To: "Cássio Gabriel" <cassiogabrielcontato@gmail.com>
Cc: Takashi Iwai <tiwai@suse.com>,
	Clemens Ladisch <clemens@ladisch.de>,
	Jaroslav Kysela <perex@perex.cz>,
	linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [PATCH] ALSA: ua101: Reject too-short USB descriptors
Date: Tue, 19 May 2026 08:09:10 +0200	[thread overview]
Message-ID: <875x4k3p89.wl-tiwai@suse.de> (raw)
In-Reply-To: <20260519-alsa-ua101-desc-len-v1-1-4307d1a5e054@gmail.com>

On Tue, 19 May 2026 05:32:15 +0200,
Cássio Gabriel wrote:
> 
> find_format_descriptor() walks the class-specific interface extras by
> advancing with bLength. It rejects descriptors that extend past the
> remaining buffer, but it does not reject descriptor lengths smaller than
> a USB descriptor header.
> 
> Reject too-short descriptors before using bLength to advance the local
> scan. This keeps the UA-101 parser robust against malformed descriptor
> data and matches the usual USB descriptor walking rules.
> 
> Fixes: 63978ab3e3e9 ("sound: add Edirol UA-101 support")
> Cc: stable@vger.kernel.org
> Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>

Applied now.  Thanks.


Takashi

      reply	other threads:[~2026-05-19  6:09 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-19  3:32 Cássio Gabriel
2026-05-19  6:09 ` Takashi Iwai [this message]

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