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| author | Takashi Iwai <tiwai@suse.de> | 2016-02-01 14:06:42 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-02-20 01:28:31 +0300 |
| commit | cf4fa9310beba9da9d7b9852146a0c2c4f451b74 (patch) | |
| tree | 91762c7dfe6b1b2f1bec48c0fc08108015c0728d /sound/synth | |
| parent | a1f25b12b7079bc695bca53712627028566c30a2 (diff) | |
| download | linux-cf4fa9310beba9da9d7b9852146a0c2c4f451b74.tar.xz | |
ALSA: seq: Fix race at closing in virmidi driver
commit 2d1b5c08366acd46c35a2e9aba5d650cb5bf5c19 upstream.
The virmidi driver has an open race at closing its assigned rawmidi
device, and this may lead to use-after-free in
snd_seq_deliver_single_event().
Plug the hole by properly protecting the linked list deletion and
calling in the right order in snd_virmidi_input_close().
BugLink: http://lkml.kernel.org/r/CACT4Y+Zd66+w12fNN85-425cVQT=K23kWbhnCEcMB8s3us-Frw@mail.gmail.com
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'sound/synth')
0 files changed, 0 insertions, 0 deletions