The patch ASoC: samsung: odroid: fix an use-after-free issue for codec
has been applied to the asoc tree at https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-5.3 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 9b6d104a6b150bd4d3e5b039340e1f6b20c2e3c1 Mon Sep 17 00:00:00 2001 From: Wen Yang <[email protected]> Date: Sat, 13 Jul 2019 11:46:14 +0800 Subject: [PATCH] ASoC: samsung: odroid: fix an use-after-free issue for codec The codec variable is still being used after the of_node_put() call, which may result in use-after-free. Fixes: bc3cf17b575a ("ASoC: samsung: odroid: Add support for secondary CPU DAI") Signed-off-by: Wen Yang <[email protected]> Cc: Krzysztof Kozlowski <[email protected]> Cc: Sangbeom Kim <[email protected]> Cc: Sylwester Nawrocki <[email protected]> Cc: Liam Girdwood <[email protected]> Cc: Mark Brown <[email protected]> Cc: Jaroslav Kysela <[email protected]> Cc: Takashi Iwai <[email protected]> Cc: [email protected] Cc: [email protected] Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Mark Brown <[email protected]> --- sound/soc/samsung/odroid.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/sound/soc/samsung/odroid.c b/sound/soc/samsung/odroid.c index dfb6e460e7eb..64ebe895cdd7 100644 --- a/sound/soc/samsung/odroid.c +++ b/sound/soc/samsung/odroid.c @@ -284,9 +284,8 @@ static int odroid_audio_probe(struct platform_device *pdev) } of_node_put(cpu); - of_node_put(codec); if (ret < 0) - return ret; + goto err_put_node; ret = snd_soc_of_get_dai_link_codecs(dev, codec, codec_link); if (ret < 0) @@ -317,6 +316,7 @@ static int odroid_audio_probe(struct platform_device *pdev) goto err_put_clk_i2s; } + of_node_put(codec); return 0; err_put_clk_i2s: @@ -326,6 +326,8 @@ static int odroid_audio_probe(struct platform_device *pdev) err_put_cpu_dai: of_node_put(cpu_dai); snd_soc_of_put_dai_link_codecs(codec_link); +err_put_node: + of_node_put(codec); return ret; } -- 2.20.1
