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69534c48ba
linux/sound/core
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Takashi Iwai 69534c48ba ALSA: pcm: Fix races among concurrent prealloc proc writes 
We have no protection against concurrent PCM buffer preallocation
changes via proc files, and it may potentially lead to UAF or some
weird problem.  This patch applies the PCM open_mutex to the proc
write operation for avoiding the racy proc writes and the PCM stream
open (and further operations).

Cc: <stable@vger.kernel.org>
Reviewed-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20220322170720.3529-5-tiwai@suse.de
Signed-off-by: Takashi Iwai <tiwai@suse.de>
2022-03-22 20:56:58 +01:00
..
oss Merge branch 'for-next' into for-linus 2022-03-21 16:18:34 +01:00
seq ALSA: seq: oss: fix typo 2022-03-14 07:51:22 +01:00
compress_offload.c ALSA: compress: Initialize mutex in snd_compress_new() 2021-07-15 10:22:38 +02:00
control_compat.c ALSA: ctl: Fix copy of updated id with element read/write 2021-12-02 16:41:07 +01:00
control_led.c ALSA: led: Use restricted type for iface assignment 2021-11-23 18:12:05 +01:00
control.c ALSA: control: Minor optimization for SNDRV_CTL_IOCTL_POWER_STATE 2021-05-25 08:49:06 +02:00
ctljack.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
device.c ALSA: core: Add snd_device_get_state() helper 2020-03-23 18:09:19 +01:00
hrtimer.c ALSA: timer: Replace tasklet with work 2020-09-09 18:32:52 +02:00
hwdep_compat.c ALSA: compat_ioctl: avoid compat_alloc_user_space 2020-09-21 10:37:07 +02:00
hwdep.c ALSA: core: Fix assignment in if condition 2021-06-09 17:30:22 +02:00
info_oss.c ALSA: oss: remove useless NULL check before kfree 2021-12-06 10:08:13 +01:00
info.c proc: remove PDE_DATA() completely 2022-01-22 08:33:37 +02:00
init.c ALSA: core: Simplify snd_power_ref_and_wait() with the standard macro 2022-01-19 17:26:04 +01:00
isadma.c ALSA: core: Add device-managed request_dma() 2021-07-19 16:16:34 +02:00
jack.c Merge branch 'for-next' into for-linus 2022-01-05 15:38:34 +01:00
Kconfig ALSA: core: Fix typo in 'PCM Timer Interface' help 2022-03-18 09:19:37 +01:00
Makefile ALSA: memalloc: Unify x86 SG-buffer handling (take#3) 2021-11-16 08:34:29 +01:00
memalloc_local.h ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
memalloc.c ALSA: memalloc: invalidate SG pages before sync 2022-02-10 13:36:53 +01:00
memory.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
misc.c ALSA: core: Fix SSID quirk lookup for subvendor=0 2022-01-17 09:59:32 +01:00
pcm_compat.c ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
pcm_dmaengine.c ASoC: dai_dma: remove slave_id field 2021-12-17 11:23:56 +05:30
pcm_drm_eld.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
pcm_iec958.c ALSA: iec958: Split status creation and fill 2021-06-08 17:05:41 +02:00
pcm_lib.c ALSA: pcm: Fix races among concurrent read/write and buffer changes 2022-03-22 20:56:27 +01:00
pcm_local.h ALSA: memalloc: Support for non-contiguous page allocation 2021-10-18 13:32:10 +02:00
pcm_memory.c ALSA: pcm: Fix races among concurrent prealloc proc writes 2022-03-22 20:56:58 +01:00
pcm_misc.c ALSA: pcm: Fix assignment in if condition 2021-06-09 17:30:24 +02:00
pcm_native.c ALSA: pcm: Fix races among concurrent prepare and hw_params/hw_free calls 2022-03-22 20:56:42 +01:00
pcm_param_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm_timer.c ALSA: timer: Constify snd_timer_hardware definitions 2020-01-03 09:24:07 +01:00
pcm_trace.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
pcm.c ALSA: pcm: Fix races among concurrent hw_params and hw_free calls 2022-03-22 20:56:07 +01:00
rawmidi_compat.c ALSA: rawmidi: Add framing mode 2021-05-17 16:02:44 +02:00
rawmidi.c ALSA: rawmidi - fix the uninitalized user_pversion 2021-12-22 20:18:27 +01:00
seq_device.c ALSA: seq: Fix a potential UAF by wrong private_free call order 2021-09-30 14:13:22 +02:00
sound_oss.c ALSA: core: Fix assignment in if condition 2021-06-09 17:30:22 +02:00
sound.c ALSA: core: Fix assignment in if condition 2021-06-09 17:30:22 +02:00
timer_compat.c ALSA: Convert strlcpy to strscpy when return value is unused 2021-01-08 09:30:05 +01:00
timer.c ALSA: timer: Unconditionally unlink slave instances, too 2021-11-05 11:27:27 +01:00
vmaster.c ALSA: Replace the word "slave" in vmaster API 2020-07-20 10:10:47 +02:00