CVE-2026-80525 (GCVE-0-2026-80525)

Vulnerability from cvelistv5 – Published: 2026-08-26 14:37 – Updated: 2026-08-26 14:37
VLAI
Title
ASoC: SOF: ipc4-topology: Refresh copier IPC payload before widget setup
Summary
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 with boot-time DMA channel assignments, causing DMA channel conflicts that lead to firmware errors and crashes. Fix this by refreshing copier_data and dma_config_tlv portions of ipc_config_data in sof_ipc4_widget_setup right before the IPC message is sent. This ensures the payload always reflects the current DMA state regardless of whether ipc_prepare ran. For DAI copiers, the gtw_cfg.config_length in copier_data is temporarily inflated to include the TLV size (matching the ipc_config_data layout) before copying, then restored, mirroring what sof_ipc4_prepare_copier_module does when first building the buffer.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: e9c6b118de1afc1d32a4eb3bc9f3d114d4fe0f1a , < decb87e76716d11d846c9c055e309c8ff90d7656 (git)
Affected: e9c6b118de1afc1d32a4eb3bc9f3d114d4fe0f1a , < 2a7d8fc0fd50e7a2020989d9840cabb74c0282e3 (git)
Affected: e9c6b118de1afc1d32a4eb3bc9f3d114d4fe0f1a , < 574498e56024082a0da68474ad4526d250732411 (git)
Affected: e9c6b118de1afc1d32a4eb3bc9f3d114d4fe0f1a , < 0c0e418dbcf0582bf80d8dbfd9b306607c065992 (git)
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Linux Linux Affected: 6.10
Unaffected: 0 , < 6.10 (semver)
Unaffected: 6.12.105 , ≤ 6.12.* (semver)
Unaffected: 6.18.46 , ≤ 6.18.* (semver)
Unaffected: 7.1.10 , ≤ 7.1.* (semver)
Unaffected: 7.2 , ≤ * (original_commit_for_fix)
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{
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          "product": "Linux",
          "programFiles": [
            "sound/soc/sof/ipc4-topology.c"
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          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nASoC: SOF: ipc4-topology: Refresh copier IPC payload before widget setup\n\nThe ipc_config_data buffer for copier widgets is built once during\nipc_prepare (called from sof_pcm_setup_connected_widgets) and cached\nfor reuse. For host copiers this buffer contains the copier_data with\ngtw_cfg.node_id (host DMA ID). For DAI copiers it additionally includes\na dma_config_tlv trailer with stream_id and dma_channel_id for HDA link\nDMA.\n\nOn suspend/resume, both host and link DMA streams are released and\nre-allocated with potentially different stream tags. The underlying\ncopier_data and dma_config_tlv structures are correctly updated by\nhost_config and sdw_hda_dai_hw_params respectively. However, since the\nwidget list (spcm-\u003estream[].list) persists across suspend,\nsof_pcm_hw_params skips sof_pcm_setup_connected_widgets and ipc_prepare\nnever runs again to rebuild ipc_config_data. The stale cached payload\nis then sent to firmware with boot-time DMA channel assignments, causing\nDMA channel conflicts that lead to firmware errors and crashes.\n\nFix this by refreshing copier_data and dma_config_tlv portions of\nipc_config_data in sof_ipc4_widget_setup right before the IPC message\nis sent. This ensures the payload always reflects the current DMA state\nregardless of whether ipc_prepare ran.\n\nFor DAI copiers, the gtw_cfg.config_length in copier_data is temporarily\ninflated to include the TLV size (matching the ipc_config_data layout)\nbefore copying, then restored, mirroring what\nsof_ipc4_prepare_copier_module does when first building the buffer."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-26T14:37:04.973Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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          "url": "https://git.kernel.org/stable/c/2a7d8fc0fd50e7a2020989d9840cabb74c0282e3"
        },
        {
          "url": "https://git.kernel.org/stable/c/574498e56024082a0da68474ad4526d250732411"
        },
        {
          "url": "https://git.kernel.org/stable/c/0c0e418dbcf0582bf80d8dbfd9b306607c065992"
        }
      ],
      "title": "ASoC: SOF: ipc4-topology: Refresh copier IPC payload before widget setup",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-80525",
    "datePublished": "2026-08-26T14:37:04.973Z",
    "dateReserved": "2026-08-26T14:34:25.764Z",
    "dateUpdated": "2026-08-26T14:37:04.973Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-09-01",
      "epss": "0.00168",
      "percentile": "0.06287"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-08-27T10:08:01+00:00",
      "cve": "CVE-2026-80525",
      "id": "CVE-2026-80525",
      "initial_release_date": "2026-08-26T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: ASoC: SOF: ipc4-topology: Refresh copier IPC payload before widget setup",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-80525.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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