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| author | Hui Peng <benquike@163.com> | 2018-12-25 18:11:52 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-13 10:07:12 +0100 |
| commit | 0ba61349a8b37aa7cc4651cfee044247f7ab0281 (patch) | |
| tree | 2136c11ccbbf5865b76a543273659932bfc992ed /sound | |
| parent | 172236e69b714879fe534b1fa2e8ffed2c221ebc (diff) | |
| download | linux-stable-0ba61349a8b37aa7cc4651cfee044247f7ab0281.tar.gz linux-stable-0ba61349a8b37aa7cc4651cfee044247f7ab0281.tar.bz2 linux-stable-0ba61349a8b37aa7cc4651cfee044247f7ab0281.zip | |
ALSA: usb-audio: Fix an out-of-bound read in create_composite_quirks
commit cbb2ebf70daf7f7d97d3811a2ff8e39655b8c184 upstream.
In `create_composite_quirk`, the terminating condition of for loops is
`quirk->ifnum < 0`. So any composite quirks should end with `struct
snd_usb_audio_quirk` object with ifnum < 0.
for (quirk = quirk_comp->data; quirk->ifnum >= 0; ++quirk) {
.....
}
the data field of Bower's & Wilkins PX headphones usb device device quirks
do not end with {.ifnum = -1}, wihch may result in out-of-bound read.
This Patch fix the bug by adding an ending quirk object.
Fixes: 240a8af929c7 ("ALSA: usb-audio: Add a quirck for B&W PX headphones")
Signed-off-by: Hui Peng <benquike@163.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/usb/quirks-table.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sound/usb/quirks-table.h b/sound/usb/quirks-table.h index e86fecaa26ec..12d0efd61b8a 100644 --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -3356,6 +3356,9 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge", "HVR-950Q"), } } }, + { + .ifnum = -1 + }, } } }, |