From: Mark Brown <broonie@kernel.org>
To: Wen Yang <wen.yang99@zte.com.cn>
Cc: alsa-devel@alsa-project.org, cheng.shengyu@zte.com.cn,
Jaroslav Kysela <perex@perex.cz>,
Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>,
Liam Girdwood <lgirdwood@gmail.com>,
linux-kernel@vger.kernel.org, Mark Brown <broonie@kernel.org>,
Takashi Iwai <tiwai@suse.com>,
wang.yi59@zte.com.cn, xue.zhihong@zte.com.cn
Subject: Applied "ASoC: audio-graph-card: fix use-after-free in graph_for_each_link" to the asoc tree
Date: Thu, 4 Jul 2019 13:24:53 +0100 (BST) [thread overview]
Message-ID: <20190704122453.A6900274389A@ypsilon.sirena.org.uk> (raw)
In-Reply-To: <1562229530-8121-1-git-send-email-wen.yang99@zte.com.cn>
The patch
ASoC: audio-graph-card: fix use-after-free in graph_for_each_link
has been applied to the asoc tree at
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.2
All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.
You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.
If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.
Please add any relevant lists and maintainers to the CCs when replying
to this mail.
Thanks,
Mark
>From 1bcc1fd64e4dd903f4d868a9e053986e3b102713 Mon Sep 17 00:00:00 2001
From: Wen Yang <wen.yang99@zte.com.cn>
Date: Thu, 4 Jul 2019 16:38:50 +0800
Subject: [PATCH] ASoC: audio-graph-card: fix use-after-free in
graph_for_each_link
After calling of_node_put() on the codec_ep and codec_port variables,
they are still being used, which may result in use-after-free.
We fix this issue by calling of_node_put() after the last usage.
Fixes: fce9b90c1ab7 ("ASoC: audio-graph-card: cleanup DAI link loop method - step2")
Signed-off-by: Wen Yang <wen.yang99@zte.com.cn>
Cc: Liam Girdwood <lgirdwood@gmail.com>
Cc: Mark Brown <broonie@kernel.org>
Cc: Jaroslav Kysela <perex@perex.cz>
Cc: Takashi Iwai <tiwai@suse.com>
Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Cc: alsa-devel@alsa-project.org
Cc: linux-kernel@vger.kernel.org
Link: https://lore.kernel.org/r/1562229530-8121-1-git-send-email-wen.yang99@zte.com.cn
Signed-off-by: Mark Brown <broonie@kernel.org>
---
sound/soc/generic/audio-graph-card.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/soc/generic/audio-graph-card.c b/sound/soc/generic/audio-graph-card.c
index ec7e673ba475..70ed28d97d49 100644
--- a/sound/soc/generic/audio-graph-card.c
+++ b/sound/soc/generic/audio-graph-card.c
@@ -435,9 +435,6 @@ static int graph_for_each_link(struct asoc_simple_priv *priv,
codec_ep = of_graph_get_remote_endpoint(cpu_ep);
codec_port = of_get_parent(codec_ep);
- of_node_put(codec_ep);
- of_node_put(codec_port);
-
/* get convert-xxx property */
memset(&adata, 0, sizeof(adata));
graph_parse_convert(dev, codec_ep, &adata);
@@ -457,6 +454,9 @@ static int graph_for_each_link(struct asoc_simple_priv *priv,
else
ret = func_noml(priv, cpu_ep, codec_ep, li);
+ of_node_put(codec_ep);
+ of_node_put(codec_port);
+
if (ret < 0)
return ret;
--
2.20.1
prev parent reply other threads:[~2019-07-04 12:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-04 8:38 [PATCH] ASoC: audio-graph-card: fix use-after-free in graph_for_each_link Wen Yang
2019-07-04 12:24 ` Mark Brown [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190704122453.A6900274389A@ypsilon.sirena.org.uk \
--to=broonie@kernel.org \
--cc=alsa-devel@alsa-project.org \
--cc=cheng.shengyu@zte.com.cn \
--cc=kuninori.morimoto.gx@renesas.com \
--cc=lgirdwood@gmail.com \
--cc=linux-kernel@vger.kernel.org \
--cc=perex@perex.cz \
--cc=tiwai@suse.com \
--cc=wang.yi59@zte.com.cn \
--cc=wen.yang99@zte.com.cn \
--cc=xue.zhihong@zte.com.cn \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).