From: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com

stable inclusion from stable-v6.6.31 commit 7db626d2730d3d80fd31638169054b1e507f07bf category: bugfix bugzilla: https://gitee.com/src-openeuler/kernel/issues/I9UOP1 CVE: CVE-2024-36955

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=...

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[ Upstream commit c158cf914713efc3bcdc25680c7156c48c12ef6a ]

The documentation for device_get_named_child_node() mentions this important point:

" The caller is responsible for calling fwnode_handle_put() on the returned fwnode pointer. "

Add fwnode_handle_put() to avoid a leaked reference.

Signed-off-by: Pierre-Louis Bossart pierre-louis.bossart@linux.intel.com Fixes: 08c2a4bc9f2a ("ALSA: hda: move Intel SoundWire ACPI scan to dedicated module") Message-ID: 20240426152731.38420-1-pierre-louis.bossart@linux.intel.com Signed-off-by: Takashi Iwai tiwai@suse.de Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Cui GaoSheng cuigaosheng1@huawei.com --- sound/hda/intel-sdw-acpi.c | 2 ++ 1 file changed, 2 insertions(+)

diff --git a/sound/hda/intel-sdw-acpi.c b/sound/hda/intel-sdw-acpi.c index b57d72ea4503..4e376994bf78 100644 --- a/sound/hda/intel-sdw-acpi.c +++ b/sound/hda/intel-sdw-acpi.c @@ -41,6 +41,8 @@ static bool is_link_enabled(struct fwnode_handle *fw_node, u8 idx) "intel-quirk-mask", &quirk_mask);

+ fwnode_handle_put(link); + if (quirk_mask & SDW_INTEL_QUIRK_MASK_BUS_DISABLE) return false;