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![]() In snd_sb_qsound_build, snd_ctl_add(..,p->qsound_switch...) and snd_ctl_add(..,p->qsound_space..) are called. But the second arguments of snd_ctl_add() could be freed via snd_ctl_add_replace() ->snd_ctl_free_one(). After the error code is returned, snd_sb_qsound_destroy(p) is called in __error branch. But in snd_sb_qsound_destroy(), the freed p->qsound_switch and p->qsound_space are still used by snd_ctl_remove(). My patch set p->qsound_switch and p->qsound_space to NULL if snd_ctl_add() failed to avoid the uaf bugs. But these codes need to further be improved with the code style. Signed-off-by: Lv Yunlong <lyl2019@mail.ustc.edu.cn> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20210426145541.8070-1-lyl2019@mail.ustc.edu.cn Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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ad1816a | ||
ad1848 | ||
cs423x | ||
es1688 | ||
galaxy | ||
gus | ||
msnd | ||
opti9xx | ||
sb | ||
wavefront | ||
wss | ||
adlib.c | ||
als100.c | ||
azt2320.c | ||
cmi8328.c | ||
cmi8330.c | ||
es18xx.c | ||
Kconfig | ||
Makefile | ||
opl3sa2.c | ||
sc6000.c | ||
sscape.c |