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| author | Cássio Gabriel <cassiogabrielcontato@gmail.com> | 2026-05-22 09:49:30 -0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2026-05-25 09:22:23 +0200 |
| commit | a0d9e8df2ebca290c2efff70abc05426e5a476b0 (patch) | |
| tree | 1bcb589330322c88844849a07f8dd4584db9e49e /include/uapi/linux/msg.h | |
| parent | f7b1f71566ff9d5344a516fa745118cee924c8d0 (diff) | |
ALSA: hda: cs35l56: Fix system name string leaks
cs35l56_hda_read_acpi() gets an allocated ACPI _SUB string from
acpi_get_subsystem_id(). On success, that string is used to create the
firmware system name.
Several error paths after the _SUB lookup can return without releasing
the allocated string. This includes speaker ID lookup errors other than
-ENOENT, and errors after a firmware system name has been allocated.
Use scoped cleanup for the temporary _SUB string and make
cs35l56->system_name device-managed. This releases the temporary _SUB
string on every error path and lets devres release the firmware system
name on probe failure and device removal.
Fixes: 6f03b446cbae ("ALSA: hda: cs35l56: Add support for speaker id")
Fixes: 40b1c2f9b299 ("ALSA: hda/cs35l56: Workaround bad dev-index on Lenovo Yoga Book 9i GenX")
Signed-off-by: Cássio Gabriel <cassiogabrielcontato@gmail.com>
Reviewed-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://patch.msgid.link/20260522-alsa-cs35l56-system-name-leak-v4-1-a6154dd09cd9@gmail.com
Diffstat (limited to 'include/uapi/linux/msg.h')
0 files changed, 0 insertions, 0 deletions