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| author | Vladis Dronov <vdronov@redhat.com> | 2016-03-31 12:05:43 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-04-12 09:08:44 -0700 |
| commit | b7f03eeaaf7cdb9528c9710d648182af5a4db493 (patch) | |
| tree | 430988cadd2d54c404933592e7a5580282b02dbc /tools/perf/scripts/python/netdev-times.py | |
| parent | 4d073cfdf7f685628485d9692623c668b173bb60 (diff) | |
ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call
commit 836b34a935abc91e13e63053d0a83b24dfb5ea78 upstream.
create_fixed_stream_quirk(), snd_usb_parse_audio_interface() and
create_uaxx_quirk() functions allocate the audioformat object by themselves
and free it upon error before returning. However, once the object is linked
to a stream, it's freed again in snd_usb_audio_pcm_free(), thus it'll be
double-freed, eventually resulting in a memory corruption.
This patch fixes these failures in the error paths by unlinking the audioformat
object before freeing it.
Based on a patch by Takashi Iwai <tiwai@suse.de>
[Note for stable backports:
this patch requires the commit 902eb7fd1e4a ('ALSA: usb-audio: Minor
code cleanup in create_fixed_stream_quirk()')]
Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=1283358
Reported-by: Ralf Spenneberg <ralf@spenneberg.net>
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/netdev-times.py')
0 files changed, 0 insertions, 0 deletions