diff options
| author | Simon Trimmer <simont@opensource.cirrus.com> | 2024-05-31 15:08:20 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-06-27 14:52:19 +0300 |
| commit | 19be722369c347f3af1c5848e303980ed040b819 (patch) | |
| tree | 0a9658fff5f9d30abee9ee45964fda9d06710573 /sound | |
| parent | 22f92238d718442fc607dc5d7ccfe415f9b391ad (diff) | |
| download | linux-19be722369c347f3af1c5848e303980ed040b819.tar.xz | |
ALSA: hda: cs35l41: Possible null pointer dereference in cs35l41_hda_unbind()
[ Upstream commit 6386682cdc8b41319c92fbbe421953e33a28840c ]
The cs35l41_hda_unbind() function clears the hda_component entry
matching it's index and then dereferences the codec pointer held in the
first element of the hda_component array, this is an issue when the
device index was 0.
Instead use the codec pointer stashed in the cs35l41_hda structure as it
will still be valid.
Fixes: 7cf5ce66dfda ("ALSA: hda: cs35l41: Add device_link between HDA and cs35l41_hda")
Signed-off-by: Simon Trimmer <simont@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20240531120820.35367-1-simont@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/pci/hda/cs35l41_hda.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sound/pci/hda/cs35l41_hda.c b/sound/pci/hda/cs35l41_hda.c index d3fa6e136744..25cf072a2a10 100644 --- a/sound/pci/hda/cs35l41_hda.c +++ b/sound/pci/hda/cs35l41_hda.c @@ -1362,7 +1362,7 @@ static void cs35l41_hda_unbind(struct device *dev, struct device *master, void * if (comps[cs35l41->index].dev == dev) { memset(&comps[cs35l41->index], 0, sizeof(*comps)); sleep_flags = lock_system_sleep(); - device_link_remove(&comps->codec->core.dev, cs35l41->dev); + device_link_remove(&cs35l41->codec->core.dev, cs35l41->dev); unlock_system_sleep(sleep_flags); } } |