« Volver al listado

CVE-2025-38486

Estado: ModificadaMedia (5.5)—

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:

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.

Leer descripción completaMostrar menos

Bug 3: Like Jie Gan pointed out, it erases all the tx information with the rx information.

Detalles técnicos trazas, registros y código del informe original
    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

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Linux — Linux Kernel

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-38486",
  "cveTags": [],
  "metrics": {
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "7796c97df6b1b2206681a07f3c80f6023a6593d5",
              "lessThan": "207cea8b72fcbdf4e6db178e54186ed4f1514b3c",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "7796c97df6b1b2206681a07f3c80f6023a6593d5",
              "lessThan": "834bce6a715ae9a9c4dce7892454a19adf22b013",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/soundwire/qcom.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.15"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.15",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.15.8",
              "versionType": "semver",
              "lessThanOrEqual": "6.15.*"
            },
            {
              "status": "unaffected",
              "version": "6.16",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/soundwire/qcom.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-07-28T12:15:30.600",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/207cea8b72fcbdf4e6db178e54186ed4f1514b3c",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/834bce6a715ae9a9c4dce7892454a19adf22b013",
      "tags": [
        "Patch"
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "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->pconfig[] is supposed to be unused.  We\nstart counting at 1.  However this code sets ctrl->pconfig[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->pconfig[] 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."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: soundwire: Revertir \"soundwire: qcom: Añadir compatibilidad con la API set_channel_map\". Esto revierte el commit 7796c97df6b1b2206681a07f3c80f6023a6593d5. Este parche interrumpió la versión Dragonboard 845c (sdm845). Veo: Excepción 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->pconfig[] no se utiliza. Empezamos a contar desde 1. Sin embargo, este código establece ctrl->pconfig[0].ch_mask = 128. Error n.° 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->pconfig[], por lo que corrompe la memoria, como señaló Yongqin Liu. Error 3: Como señaló Jie Gan, borra toda la información de la transmisión junto con la de la recepción."
    }
  ],
  "lastModified": "2026-07-30T06:23:20.797",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7AAE4EC0-78FF-4244-B25E-7B6A937DA2D5",
              "versionEndExcluding": "6.15.8",
              "versionStartIncluding": "6.15"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6D4894DB-CCFE-4602-B1BF-3960B2E19A01"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc2:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "09709862-E348-4378-8632-5A7813EDDC86"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc3:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "415BF58A-8197-43F5-B3D7-D1D63057A26E"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc4:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A0517869-312D-4429-80C2-561086E1421C"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc5:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "85421F4E-C863-4ABF-B4B4-E887CC2F7F92"
            },
            {
              "criteria": "cpe:2.3:o:linux:linux_kernel:6.16:rc6:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "3827F0D4-5FEE-4181-B267-5A45E7CA11FC"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}