Takashi Iwai ae583f113d ALSA: mixer: oss: Add card disconnect checkpoints ...

[ Upstream commit 084d5d4441 ]

ALSA OSS mixer layer calls the kcontrol ops rather individually, and
pending calls might be not always caught at disconnecting the device.

For avoiding the potential UAF scenarios, add sanity checks of the
card disconnection at each entry point of OSS mixer accesses.  The
rwsem is taken just before that check, hence the rest context should
be covered by that properly.

Link: https://patch.msgid.link/20260209121212.171430-1-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

2026-03-04 07:21:10 -05:00

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copy.c

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io.c

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linear.c

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Makefile

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mixer_oss.c

ALSA: mixer: oss: Add card disconnect checkpoints

2026-03-04 07:21:10 -05:00

mulaw.c

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pcm_oss.c

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pcm_plugin.c

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pcm_plugin.h

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rate.c

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route.c

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