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| author | Vladis Dronov <vdronov@redhat.com> | 2016-03-31 12:05:43 -0400 |
|---|---|---|
| committer | Mark Salyzyn <salyzyn@google.com> | 2016-09-09 21:23:43 +0000 |
| commit | 571763be0e7f0aab3aa3eb02bb315b63539cc10c (patch) | |
| tree | 9b70e1d93bdc69cc67594b7de5253d56bb562730 /security/selinux/hooks.c | |
| parent | 0f959e0a3261539eb14420d02a491188cc52f9e8 (diff) | |
UPSTREAM: ALSA: usb-audio: Fix double-free in error paths after snd_usb_add_audio_stream() call
(cherry picked from commit 836b34a935abc91e13e63053d0a83b24dfb5ea78)
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>
Cc: <stable@vger.kernel.org> # see the note above
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Change-Id: I7073a17d8c99886d2f6ed7981892712ba7dd5873
Bug: 30952477
Diffstat (limited to 'security/selinux/hooks.c')
0 files changed, 0 insertions, 0 deletions