CVE-2026-80525

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

ASoC: SOF: ipc4-topology: Refresh copier IPC payload before widget setup

The ipc_config_data buffer for copier widgets is built once during

ipc_prepare (called from sof_pcm_setup_connected_widgets) and cached

for reuse. For host copiers this buffer contains the copier_data with

gtw_cfg.node_id (host DMA ID). For DAI copiers it additionally includes

a dma_config_tlv trailer with stream_id and dma_channel_id for HDA link

DMA.

On suspend/resume, both host and link DMA streams are released and

re-allocated with potentially different stream tags. The underlying

copier_data and dma_config_tlv structures are correctly updated by

host_config and sdw_hda_dai_hw_params respectively. However, since the

widget list (spcm->stream[].list) persists across suspend,

sof_pcm_hw_params skips sof_pcm_setup_connected_widgets and ipc_prepare

never runs again to rebuild ipc_config_data. The stale cached payload

is then sent to firmware wi

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References