diff options
author | Xi Wang <xi.wang@gmail.com> | 2012-02-14 05:18:48 -0500 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-06-07 12:46:48 -0700 |
commit | 93a327fcdef0c9e089ba7b347780cf9eaa92677f (patch) | |
tree | 79da5eb7b8f9628106eee38af666d6967203dfde /net | |
parent | 44f059fb742aac78cffdab5e0d8fe0c9910c1ded (diff) |
ALSA: usb-audio: avoid integer overflow in create_fixed_stream_quirk()
commit 8866f405efd4171f9d9c91901d2dd02f01bacb60 upstream.
A malicious USB device could feed in a large nr_rates value. This would
cause the subsequent call to kmemdup() to allocate a smaller buffer than
expected, leading to out-of-bounds access.
This patch validates the nr_rates value and reuses the limit introduced
in commit 4fa0e81b ("ALSA: usb-audio: fix possible hang and overflow
in parse_uac2_sample_rate_range()").
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
0 files changed, 0 insertions, 0 deletions