From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 C437513D600; Tue, 23 Jul 2024 18:41:08 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721760068; cv=none; b=fpHfQwl5SyjX8Olfw0NIOYz8U7KYiAqNyy3gkdTo6WdFYZ4r0movPP3Z1M/3UWZFT2tHP/+BClIOQan7vr0NzvviygEPx72z9XLf7zb79C9qQ8d+9zq85n9Dpf+rjvZ9DtIZPY8gAV84iTjqV6r9sQde6NT+x6Z/i2P9OZL2+2I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1721760068; c=relaxed/simple; bh=5MAnPfaHtzHAwZquw8Ylzm1ntrEtUrUTe6LWO+RBQVE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=QVkkj35cVrkfVDZtSncVw8j7sNdu5IjOS/dpRGu+oLngjj5wJLxnnm4AiaqYx7VTUdbBADdpZo9L/BC930WXhlayYCTL2ak1X0EmkLEgJlbAcSuON8pD7gEMAuYXLpUkgg/TRNMl6S+SaNEMelXURtjLWgTSAvkWd7+3iPe3EDY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Ah7AfSOF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Ah7AfSOF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41CA3C4AF0A; Tue, 23 Jul 2024 18:41:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1721760068; bh=5MAnPfaHtzHAwZquw8Ylzm1ntrEtUrUTe6LWO+RBQVE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ah7AfSOFZErLO57isANWBxQi0KM5VkaiZgT3273VT53oKak2v2KrFqk8ifc8A/WyW Sfz9nYL1ioieT3mvmU/zEnjmOW13AYmrir0fHnEC0Soq6K3rsTX6vsknuZvXeF3QUD tqz/bUEgzgMQcj2ORF/kVQXYAbWcaWfCEBJihpVg= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Jason Montleon , Cezary Rojewski , =?UTF-8?q?Amadeusz=20S=C5=82awi=C5=84ski?= , Mark Brown , Sasha Levin Subject: [PATCH 6.9 092/163] ASoC: topology: Fix references to freed memory Date: Tue, 23 Jul 2024 20:23:41 +0200 Message-ID: <20240723180147.031663771@linuxfoundation.org> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240723180143.461739294@linuxfoundation.org> References: <20240723180143.461739294@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 6.9-stable review patch. If anyone has any objections, please let me know. ------------------ From: Amadeusz Sławiński [ Upstream commit 97ab304ecd95c0b1703ff8c8c3956dc6e2afe8e1 ] Most users after parsing a topology file, release memory used by it, so having pointer references directly into topology file contents is wrong. Use devm_kmemdup(), to allocate memory as needed. Reported-by: Jason Montleon Link: https://github.com/thesofproject/avs-topology-xml/issues/22#issuecomment-2127892605 Reviewed-by: Cezary Rojewski Signed-off-by: Amadeusz Sławiński Link: https://lore.kernel.org/r/20240603102818.36165-2-amadeuszx.slawinski@linux.intel.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- sound/soc/soc-topology.c | 27 ++++++++++++++++++++++----- 1 file changed, 22 insertions(+), 5 deletions(-) diff --git a/sound/soc/soc-topology.c b/sound/soc/soc-topology.c index ba4890991f0d7..7add1dbf1d214 100644 --- a/sound/soc/soc-topology.c +++ b/sound/soc/soc-topology.c @@ -1060,15 +1060,32 @@ static int soc_tplg_dapm_graph_elems_load(struct soc_tplg *tplg, break; } - route->source = elem->source; - route->sink = elem->sink; + route->source = devm_kmemdup(tplg->dev, elem->source, + min(strlen(elem->source), + SNDRV_CTL_ELEM_ID_NAME_MAXLEN), + GFP_KERNEL); + route->sink = devm_kmemdup(tplg->dev, elem->sink, + min(strlen(elem->sink), SNDRV_CTL_ELEM_ID_NAME_MAXLEN), + GFP_KERNEL); + if (!route->source || !route->sink) { + ret = -ENOMEM; + break; + } /* set to NULL atm for tplg users */ route->connected = NULL; - if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == 0) + if (strnlen(elem->control, SNDRV_CTL_ELEM_ID_NAME_MAXLEN) == 0) { route->control = NULL; - else - route->control = elem->control; + } else { + route->control = devm_kmemdup(tplg->dev, elem->control, + min(strlen(elem->control), + SNDRV_CTL_ELEM_ID_NAME_MAXLEN), + GFP_KERNEL); + if (!route->control) { + ret = -ENOMEM; + break; + } + } /* add route dobj to dobj_list */ route->dobj.type = SND_SOC_DOBJ_GRAPH; -- 2.43.0