Takashi Iwai ff654f1d31 ALSA: pcm: oss: Fix potential out-of-bounds shift ... commit 175b8d89fe292796811fdee87fa39799a5b6b87a upstream. syzbot spotted a potential out-of-bounds shift in the PCM OSS layer where it calculates the buffer size with the arbitrary shift value given via an ioctl. Add a range check for avoiding the undefined behavior. As the value can be treated by a signed integer, the max shift should be 30. Reported-by: syzbot+df7dc146ebdd6435eea3@syzkaller.appspotmail.com Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20201209084552.17109-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-21 13:30:08 +01:00
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copy.c
io.c
linear.c	ALSA: pcm: oss: Avoid potential buffer overflows	2019-12-04 15:51:30 +01:00
Makefile
mixer_oss.c	ALSA: oss: More constifications	2020-01-05 16:14:58 +01:00
mulaw.c	ALSA: pcm: oss: Remove superfluous WARN_ON() for mulaw sanity check	2020-09-01 15:18:33 +02:00
pcm_oss.c	ALSA: pcm: oss: Fix potential out-of-bounds shift	2020-12-21 13:30:08 +01:00
pcm_plugin.c	ALSA: Use fallthrough pseudo-keyword	2020-07-09 13:01:29 +02:00
pcm_plugin.h	ALSA: Replace zero-length array with flexible-array	2020-05-07 22:30:36 +02:00
rate.c	ALSA: core: Replace zero-length array with flexible-array member	2020-02-12 08:14:43 +01:00
route.c	ALSA: pcm: oss: Avoid potential buffer overflows	2019-12-04 15:51:30 +01:00