• Takashi Sakamoto's avatar
    ALSA: firewire: fix NULL pointer dereference when releasing uninitialized data of iso-resource · 0c264af7
    Takashi Sakamoto authored
    When calling 'iso_resource_free()' for uninitialized data, this function
    causes NULL pointer dereference due to its 'unit' member. This occurs when
    unplugging audio and music units on IEEE 1394 bus at failure of card
    registration.
    
    This commit fixes the bug. The bug exists since kernel v4.5.
    
    Fixes: 324540c4 ('ALSA: fireface: postpone sound card registration') at v4.12
    Fixes: 8865a31e ('ALSA: firewire-motu: postpone sound card registration') at v4.12
    Fixes: b610386c ('ALSA: firewire-tascam: deleyed registration of sound card') at v4.7
    Fixes: 86c8dd7f ('ALSA: firewire-digi00x: delayed registration of sound card') at v4.7
    Fixes: 6c29230e ('ALSA: oxfw: delayed registration of sound card') at v4.7
    Fixes: 7d3c1d59 ('ALSA: fireworks: delayed registration of sound card') at v4.7
    Fixes: 04a2c73c ('ALSA: bebob: delayed registration of sound card') at v4.7
    Fixes: b59fb190 ('ALSA: dice: postpone card registration') at v4.5
    Cc: <stable@vger.kernel.org> # v4.5+
    Signed-off-by: 's avatarTakashi Sakamoto <o-takashi@sakamocchi.jp>
    Signed-off-by: 's avatarTakashi Iwai <tiwai@suse.de>
    0c264af7