From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id E29493264D4; Sat, 12 Sep 2026 13:48:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789220937; cv=none; b=ovRNTVm7nwD4bgzLPVLDjiv+uTlEitEWAPFf5NB1/YpMecJiaco0+Py2eFbzIUKB9NFnTHEY/HJuFxfTWJS2wdw4Bz3kTZMCBue3mr2OMmLj81obHUzpN9BsX1gWRobh2JRMur+3b7iMOvyUR6abfHGGHjPvQBWV0euPE+Q1cCQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789220937; c=relaxed/simple; bh=hOG/bQb9+3mO3s0nTCZhvdZIaRkL7yIBUEiAXNm3S8Y=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Uav9851f20V4Q04RtuasNPEbQdzkTvZzbdlpToBdRJShhE13t/x5CKkjpac6yy2E24NxCKx/wi8cXnr7PwiYqRwmUdV9K0hAXJBUfBsk/lz1nLxKxIrswaUQjH4mwds5IZwIf5exwPbQpxE2/D24uOkzLTyoPYUru9VcY2fOamA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=lzx47FFe; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="lzx47FFe" Received: by smtp.kernel.org (Postfix) with ESMTPSA id B949F1F000FF; Sat, 12 Sep 2026 13:48:54 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789220935; bh=oi1xBiAfoWca84zAswGfQ+sJ1igOu6p8fJ72YpRwonA=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=lzx47FFe1ObLF1RuLm6Uy6Tr9hYMbViATzeNqAIWMes+SZBPp/Zu5zpN92OswbQ15 YgTAUfikrPfqjLY9WcSDHr80qlGGnqsgReT12F5i0YnB4lMPEuUHvXOf8HXGL6E9mL /Jxdq6Q8oSPIUMVqS0uyyJg+32+IjZ3DdHQ1uVDI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Takashi Iwai Subject: [PATCH 6.6 0280/1424] ALSA: mts64: Check card index validity at probe Date: Sat, 12 Sep 2026 08:45:12 +0200 Message-ID: <20260912065613.552668817@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.279695368@linuxfoundation.org> References: <20260912065607.279695368@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.6-stable review patch. If anyone has any objections, please let me know. ------------------ From: Takashi Iwai commit d18a260720f86a5f8b5fcfefc4ba2e9dd01c10f8 upstream. Although mts64 driver has a check of the given devptr->id value, it doesn't check for a negative id, which is often given as "none" or such value when bound via sysfs. This may lead to OOB access for index[] and other parameters. Add a sanity check for the card index and warn/correct it if it's a value out of the range. Cc: stable@vger.kernel.org Signed-off-by: Takashi Iwai Link: https://patch.msgid.link/20260806153227.1460166-6-tiwai@suse.de Signed-off-by: Greg Kroah-Hartman --- sound/drivers/mts64.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/sound/drivers/mts64.c +++ b/sound/drivers/mts64.c @@ -919,6 +919,12 @@ static int snd_mts64_probe(struct platfo p = platform_get_drvdata(pdev); platform_set_drvdata(pdev, NULL); + if (dev < 0) { + dev_warn(&pdev->dev, + "Invalid card index %d, using default 0\n", dev); + dev = 0; + } + if (dev >= SNDRV_CARDS) return -ENODEV; if (!enable[dev])