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Johan Hovold 370aadd16d ALSA: usb-audio: fix sync-ep altsetting sanity check 
commit 5d1b71226dc4d44b4b65766fa9d74492f9d4587b upstream.

The altsetting sanity check in set_sync_ep_implicit_fb_quirk() was
checking for there to be at least one altsetting but then went on to
access the second one, which may not exist.

This could lead to random slab data being used to initialise the sync
endpoint in snd_usb_add_endpoint().

Fixes: c75a8a7ae565 ("ALSA: snd-usb: add support for implicit feedback")
Fixes: ca10a7ebdff1 ("ALSA: usb-audio: FT C400 sync playback EP to capture EP")
Fixes: 5e35dc0338d8 ("ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204")
Fixes: 17f08b0d9aaf ("ALSA: usb-audio: add implicit fb quirk for Axe-Fx II")
Fixes: 103e9625647a ("ALSA: usb-audio: simplify set_sync_ep_implicit_fb_quirk")
Cc: stable <stable@vger.kernel.org>     # 3.5
Signed-off-by: Johan Hovold <johan@kernel.org>
Link: https://lore.kernel.org/r/20200114083953.1106-1-johan@kernel.org
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-01-23 08:22:31 +01:00
..
ac97
ALSA: ac97: Fix double free of ac97_codec_device
2019-07-23 14:16:11 +02:00
aoa
ALSA: aoa: onyx: always initialize register read value
2019-07-29 09:21:39 +02:00
arm
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
atmel
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
core
ALSA: seq: Fix racy access for queue timer in proc read
2020-01-23 08:22:31 +01:00
drivers
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
firewire
ALSA: firewire-tascam: fix corruption due to spin lock without restoration in SoftIRQ context
2020-01-23 08:22:31 +01:00
hda
ALSA: hda: Fix regression by strip mask fix
2019-12-21 11:05:23 +01:00
i2c
ALSA: i2c: ak4xxx-adda: Fix a possible null pointer dereference in build_adc_controls()
2019-07-26 14:25:37 +02:00
isa
ALSA: cs4236: fix error return comparison of an unsigned integer
2020-01-09 10:20:00 +01:00
mips
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176
2019-05-30 11:29:19 -07:00
oss
sound: dmasound_atari: Mark expected switch fall-through
2019-07-30 09:36:13 +02:00
parisc
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 176
2019-05-30 11:29:19 -07:00
pci
ALSA: hda/realtek - Add quirk for the bass speaker on Lenovo Yoga X1 7th gen
2020-01-14 20:08:20 +01:00
pcmcia
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
ppc
ALSA: ps3: Remove Unneeded variable: "ret"
2019-07-10 11:53:31 +02:00
sh
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 273
2019-06-05 17:30:30 +02:00
soc
ASoC: Intel: bytcht_es8316: Fix Irbis NB41 netbook quirk
2020-01-23 08:22:30 +01:00
sparc
ALSA: sparc: Mark expected switch fall-throughs
2019-07-30 09:37:01 +02:00
spi
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500
2019-06-19 17:09:55 +02:00
synth
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
usb
ALSA: usb-audio: fix sync-ep altsetting sanity check
2020-01-23 08:22:31 +01:00
x86
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 285
2019-06-05 17:36:37 +02:00
xen
ASoC: Updates for v5.3
2019-07-08 14:45:34 +02:00
ac97_bus.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
Kconfig
treewide: Add SPDX license identifier - Makefile/Kconfig
2019-05-21 10:50:46 +02:00
last.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156
2019-05-30 11:26:35 -07:00
Makefile
…
sound_core.c
sound: fix a memory leak bug
2019-08-08 08:18:32 +02:00