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authorMark Brown <broonie@kernel.org>2026-06-11 22:44:46 +0300
committerMark Brown <broonie@kernel.org>2026-06-11 22:44:46 +0300
commited8676d99fe6a11e9231d70bc4990ad289359765 (patch)
tree80918086a63534bf0f16d74bd71570d72562ae90 /include/linux
parentc5827903973901278e51f1efed8bfd49d0228233 (diff)
parent1d8aabb413b5638670dfd1162169edc0ba276a2e (diff)
downloadlinux-ed8676d99fe6a11e9231d70bc4990ad289359765.tar.xz
ASoC: Validate written enum values in custom controls
HyeongJun An <sammiee5311@gmail.com> says: Some custom ASoC kcontrol put() handlers use the written enum value (ucontrol->value.enumerated.item[0]) to index a table or compute a bit shift before validating that the value is within the control's enum range. An out-of-range value written from userspace is therefore consumed before it is rejected. This is the same class addressed for the Meson codecs in commit 1e001206804b ("ASoC: meson: g12a-tohdmitx: Validate written enum values") and commit 3150b70e944e ("ASoC: meson: g12a-toacodec: Validate written enum values"). Fix four more instances: - hdac_hdmi reads e->texts[item] before validation. - aiu converts the item before validating it. - fsl_audmix converts the item and uses the result before validation. - tegra210_ahub reads e->values[item] before validation. Link: https://patch.msgid.link/20260609124317.38046-1-sammiee5311@gmail.com
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