| From | Greg Kroah-Hartman <> | Subject | [PATCH 5.12 146/173] ASoC: core: Fix Null-point-dereference in fmt_single_name() | Date | Mon, 14 Jun 2021 12:27:58 +0200 |
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From: Kefeng Wang <wangkefeng.wang@huawei.com>
commit 41daf6ba594d55f201c50280ebcd430590441da1 upstream.
Check the return value of devm_kstrdup() in case of Null-point-dereference.
Fixes: 45dd9943fce0 ("ASoC: core: remove artificial component and DAI name constraint") Cc: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reported-by: Hulk Robot <hulkci@huawei.com> Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Link: https://lore.kernel.org/r/20210524024941.159952-1-wangkefeng.wang@huawei.com Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- sound/soc/soc-core.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/sound/soc/soc-core.c +++ b/sound/soc/soc-core.c @@ -2223,6 +2223,8 @@ static char *fmt_single_name(struct devi return NULL; name = devm_kstrdup(dev, devname, GFP_KERNEL); + if (!name) + return NULL; /* are we a "%s.%d" name (platform and SPI components) */ found = strstr(name, dev->driver->name);
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