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| author |   Jia-Ju Bai <baijiaju1990@gmail.com> | 2019-07-26 10:14:42 +0800 |
|---|---|---|
| committer |   Takashi Iwai <tiwai@suse.de> | 2019-07-26 14:25:37 +0200 |
| commit | 2127c01b7f63b06a21559f56a8c81a3c6535bd1a (patch) | |
| tree | c93b0d77365a349af43d033a85a9ed774b8f0f5a /include | |
| parent | ALSA: hda - Show the fatal CORB/RIRB error more clearly (diff) | |
| download | linux-dev-2127c01b7f63b06a21559f56a8c81a3c6535bd1a.tar.xz linux-dev-2127c01b7f63b06a21559f56a8c81a3c6535bd1a.zip | |
ALSA: i2c: ak4xxx-adda: Fix a possible null pointer dereference in build_adc_controls()
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>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions