ALSA: sb: Fix potential double-free of CSP mixer elements

Browse source

snd_sb_qsound_destroy() contains the calls of removing the previously
created mixer controls, but it doesn't clear the pointers.  As
snd_sb_qsound_destroy() itself may be repeatedly called via ioctl,
this could lead to double-free potentially.

Fix it by clearing the struct fields properly afterwards.

Link: https://lore.kernel.org/r/20210608140540.17885-4-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>

...

This commit is contained in:

Takashi Iwai 2021-06-08 16:04:37 +02:00

parent 36e7b12b21

commit c305366a37

1 changed files with 6 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

8

sound/isa/sb/sb16_csp.c

View file