CVE-2025-38486 (GCVE-0-2025-38486)

Vulnerability from cvelistv5 – Published: 2025-07-28 11:21 – Updated: 2026-08-05 12:02
VLAI
Title
soundwire: Revert "soundwire: qcom: Add set_channel_map api support"
Summary
In the Linux kernel, the following vulnerability has been resolved: soundwire: Revert "soundwire: qcom: Add set_channel_map api support" This reverts commit 7796c97df6b1b2206681a07f3c80f6023a6593d5. This patch broke Dragonboard 845c (sdm845). I see: Unexpected kernel BRK exception at EL1 Internal error: BRK handler: 00000000f20003e8 [#1] SMP pc : qcom_swrm_set_channel_map+0x7c/0x80 [soundwire_qcom] lr : snd_soc_dai_set_channel_map+0x34/0x78 Call trace: qcom_swrm_set_channel_map+0x7c/0x80 [soundwire_qcom] (P) sdm845_dai_init+0x18c/0x2e0 [snd_soc_sdm845] snd_soc_link_init+0x28/0x6c snd_soc_bind_card+0x5f4/0xb0c snd_soc_register_card+0x148/0x1a4 devm_snd_soc_register_card+0x50/0xb0 sdm845_snd_platform_probe+0x124/0x148 [snd_soc_sdm845] platform_probe+0x6c/0xd0 really_probe+0xc0/0x2a4 __driver_probe_device+0x7c/0x130 driver_probe_device+0x40/0x118 __device_attach_driver+0xc4/0x108 bus_for_each_drv+0x8c/0xf0 __device_attach+0xa4/0x198 device_initial_probe+0x18/0x28 bus_probe_device+0xb8/0xbc deferred_probe_work_func+0xac/0xfc process_one_work+0x244/0x658 worker_thread+0x1b4/0x360 kthread+0x148/0x228 ret_from_fork+0x10/0x20 Kernel panic - not syncing: BRK handler: Fatal exception Dan has also reported following issues with the original patch https://lore.kernel.org/all/33fe8fe7-719a-405a-9ed2-d9f816ce1d57@sabinyo.mountain/ Bug #1: The zeroeth element of ctrl->pconfig[] is supposed to be unused. We start counting at 1. However this code sets ctrl->pconfig[0].ch_mask = 128. Bug #2: There are SLIM_MAX_TX_PORTS (16) elements in tx_ch[] array but only QCOM_SDW_MAX_PORTS + 1 (15) in the ctrl->pconfig[] array so it corrupts memory like Yongqin Liu pointed out. Bug 3: Like Jie Gan pointed out, it erases all the tx information with the rx information.
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7796c97df6b1b2206681a07f3c80f6023a6593d5 , < 207cea8b72fcbdf4e6db178e54186ed4f1514b3c (git)
Affected: 7796c97df6b1b2206681a07f3c80f6023a6593d5 , < 834bce6a715ae9a9c4dce7892454a19adf22b013 (git)
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Linux Linux Affected: 6.15
Unaffected: 0 , < 6.15 (semver)
Unaffected: 6.15.8 , ≤ 6.15.* (semver)
Unaffected: 6.16 , ≤ * (original_commit_for_fix)
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            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsoundwire: Revert \"soundwire: qcom: Add set_channel_map api support\"\n\nThis reverts commit 7796c97df6b1b2206681a07f3c80f6023a6593d5.\n\nThis patch broke Dragonboard 845c (sdm845). I see:\n\n    Unexpected kernel BRK exception at EL1\n    Internal error: BRK handler: 00000000f20003e8 [#1]  SMP\n    pc : qcom_swrm_set_channel_map+0x7c/0x80 [soundwire_qcom]\n    lr : snd_soc_dai_set_channel_map+0x34/0x78\n    Call trace:\n     qcom_swrm_set_channel_map+0x7c/0x80 [soundwire_qcom] (P)\n     sdm845_dai_init+0x18c/0x2e0 [snd_soc_sdm845]\n     snd_soc_link_init+0x28/0x6c\n     snd_soc_bind_card+0x5f4/0xb0c\n     snd_soc_register_card+0x148/0x1a4\n     devm_snd_soc_register_card+0x50/0xb0\n     sdm845_snd_platform_probe+0x124/0x148 [snd_soc_sdm845]\n     platform_probe+0x6c/0xd0\n     really_probe+0xc0/0x2a4\n     __driver_probe_device+0x7c/0x130\n     driver_probe_device+0x40/0x118\n     __device_attach_driver+0xc4/0x108\n     bus_for_each_drv+0x8c/0xf0\n     __device_attach+0xa4/0x198\n     device_initial_probe+0x18/0x28\n     bus_probe_device+0xb8/0xbc\n     deferred_probe_work_func+0xac/0xfc\n     process_one_work+0x244/0x658\n     worker_thread+0x1b4/0x360\n     kthread+0x148/0x228\n     ret_from_fork+0x10/0x20\n    Kernel panic - not syncing: BRK handler: Fatal exception\n\nDan has also reported following issues with the original patch\nhttps://lore.kernel.org/all/33fe8fe7-719a-405a-9ed2-d9f816ce1d57@sabinyo.mountain/\n\nBug #1:\nThe zeroeth element of ctrl-\u003epconfig[] is supposed to be unused.  We\nstart counting at 1.  However this code sets ctrl-\u003epconfig[0].ch_mask = 128.\n\nBug #2:\nThere are SLIM_MAX_TX_PORTS (16) elements in tx_ch[] array but only\nQCOM_SDW_MAX_PORTS + 1 (15) in the ctrl-\u003epconfig[] array so it corrupts\nmemory like Yongqin Liu pointed out.\n\nBug 3:\nLike Jie Gan pointed out, it erases all the tx information with the rx\ninformation."
          },
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            "lang": "es",
            "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: soundwire: Revertir \"soundwire: qcom: A\u00f1adir compatibilidad con la API set_channel_map\". Esto revierte el commit 7796c97df6b1b2206681a07f3c80f6023a6593d5. Este parche interrumpi\u00f3 la versi\u00f3n Dragonboard 845c (sdm845). Veo: Excepci\u00f3n BRK de kernel inesperada en EL1 Error interno: BRK handler: 00000000f20003e8 [#1] SMP pc : qcom_swrm_set_channel_map+0x7c/0x80 [soundwire_qcom] lr : snd_soc_dai_set_channel_map+0x34/0x78 Call trace: qcom_swrm_set_channel_map+0x7c/0x80 [soundwire_qcom] (P) sdm845_dai_init+0x18c/0x2e0 [snd_soc_sdm845] snd_soc_link_init+0x28/0x6c snd_soc_bind_card+0x5f4/0xb0c snd_soc_register_card+0x148/0x1a4 devm_snd_soc_register_card+0x50/0xb0 sdm845_snd_platform_probe+0x124/0x148 [snd_soc_sdm845] platform_probe+0x6c/0xd0 really_probe+0xc0/0x2a4 __driver_probe_device+0x7c/0x130 driver_probe_device+0x40/0x118 __device_attach_driver+0xc4/0x108 bus_for_each_drv+0x8c/0xf0 __device_attach+0xa4/0x198 device_initial_probe+0x18/0x28 bus_probe_device+0xb8/0xbc deferred_probe_work_func+0xac/0xfc process_one_work+0x244/0x658 worker_thread+0x1b4/0x360 kthread+0x148/0x228 ret_from_fork+0x10/0x20 Kernel panic - not syncing: BRK handler: Fatal exception Dan has also reported following issues with the original patch https://lore.kernel.org/all/33fe8fe7-719a-405a-9ed2-d9f816ce1d57@sabinyo.mountain/ Bug #1: se supone que el elemento cero de ctrl-\u0026gt;pconfig[] no se utiliza. Empezamos a contar desde 1. Sin embargo, este c\u00f3digo establece ctrl-\u0026gt;pconfig[0].ch_mask = 128. Error n.\u00b0 2: Hay elementos SLIM_MAX_TX_PORTS (16) en la matriz tx_ch[], pero solo QCOM_SDW_MAX_PORTS + 1 (15) en la matriz ctrl-\u0026gt;pconfig[], por lo que corrompe la memoria, como se\u00f1al\u00f3 Yongqin Liu. Error 3: Como se\u00f1al\u00f3 Jie Gan, borra toda la informaci\u00f3n de la transmisi\u00f3n junto con la de la recepci\u00f3n."
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        "id": "CVE-2025-38486",
        "lastModified": "2026-07-30T06:23:20.797",
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              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "None",
      "current_release_date": "2026-06-30T10:22:23+00:00",
      "cve": "CVE-2025-38486",
      "id": "CVE-2025-38486",
      "initial_release_date": "2025-07-28T00:00:00+00:00",
      "product_status:known_not_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: soundwire: Revert \"soundwire: qcom: Add set_channel_map api support\"",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-38486.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-07-15T06:08:18Z",
      "cve": "CVE-2025-38486",
      "id": "CVE-2025-38486",
      "initial_release_date": "2025-07-28T23:22:36Z",
      "product_status:known_not_affected": "414",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2025-38486",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2025-38486.json",
      "version": "6"
    }
  }
}



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Taxonomy of the tags.





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.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.