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author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2019-07-26 10:14:42 +0800 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-05 13:09:37 +0200 |
commit | 55a98e872186ea6e92a604c1b5e0ff75909237eb (patch) | |
tree | b3c5f560204e8919c1615630017b0858e45caccb /drivers/edac | |
parent | 1af6822f29d6b5c3b6e832aba8ae5e312047665d (diff) | |
download | linux-stable-55a98e872186ea6e92a604c1b5e0ff75909237eb.tar.gz linux-stable-55a98e872186ea6e92a604c1b5e0ff75909237eb.tar.bz2 linux-stable-55a98e872186ea6e92a604c1b5e0ff75909237eb.zip |
ALSA: i2c: ak4xxx-adda: Fix a possible null pointer dereference in build_adc_controls()
[ Upstream commit 2127c01b7f63b06a21559f56a8c81a3c6535bd1a ]
In build_adc_controls(), there is an if statement on line 773 to check
whether ak->adc_info is NULL:
if (! ak->adc_info ||
! ak->adc_info[mixer_ch].switch_name)
When ak->adc_info is NULL, it is used on line 792:
knew.name = ak->adc_info[mixer_ch].selector_name;
Thus, a possible null-pointer dereference may occur.
To fix this bug, referring to lines 773 and 774, ak->adc_info
and ak->adc_info[mixer_ch].selector_name are checked before being used.
This bug is found by a static analysis tool STCheck written by us.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/edac')
0 files changed, 0 insertions, 0 deletions