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| author | Jia-Ju Bai <baijiaju1990@gmail.com> | 2019-07-26 10:14:42 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-05 12:27:46 +0200 |
| commit | 9916480fc2b674b47968bf3b0f5f490b2805548e (patch) | |
| tree | d20b93fe085c6e5f25d6ec4a87b1718ed108fbcc /include | |
| parent | c5f680b2ca2c6708052db733af90bc5a61a59065 (diff) | |
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 'include')
0 files changed, 0 insertions, 0 deletions