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authorTakashi Iwai2017-02-08 12:35:39 +0100
committerTakashi Iwai2017-02-08 12:42:37 +0100
commit4842e98f26dd80be3623c4714a244ba52ea096a8 (patch)
tree08e56d4db3d9f4d720fbaf3091d31ff219c5b58e /sound/pci/hda/patch_hdmi.c
parentRevert "ALSA: line6: Only determine control port properties if needed" (diff)
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ALSA: seq: Fix race at creating a queue
When a sequencer queue is created in snd_seq_queue_alloc(),it adds the new queue element to the public list before referencing it. Thus the queue might be deleted before the call of snd_seq_queue_use(), and it results in the use-after-free error, as spotted by syzkaller. The fix is to reference the queue object at the right time. Reported-by: Dmitry Vyukov <dvyukov@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/hda/patch_hdmi.c')
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