{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64500",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-64500"
  ],
  "published": "2026-07-25T08:51:45Z",
  "summary": "iio: adc: lpc32xx: Initialize completion before requesting IRQ",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\niio: adc: lpc32xx: Initialize completion before requesting IRQ\n\nIn the report from Jaeyoung Chung:\n\n\"lpc32xx_adc_probe() in drivers/iio/adc/lpc32xx_adc.c registers its\ninterrupt handler with devm_request_irq() before it initializes\nst->completion with init_completion(). If an interrupt arrives after\ndevm_request_irq() and before init_completion(), the handler calls\ncomplete() on an uninitialized completion, causing a kernel panic.\n\nThe probe path, in lpc32xx_adc_probe():\n\n    iodev = devm_iio_device_alloc(&pdev->dev, sizeof(*st)); /* st kzalloc-zeroed */\n    ...\n    retval = devm_request_irq(&pdev->dev, irq, lpc32xx_adc_isr, 0,\n                              LPC32XXAD_NAME, st);           /* register handler */\n    ...\n    init_completion(&st->completion);                       /* initialize completion */\n\nlpc32xx_adc_isr() calls complete():\n\n    complete(&st->completion);\n\nIf the device raises an interrupt before init_completion() runs,\ncomplete() acquires the uninitialized wait.lock and walks the zeroed\ntask_list in swake_up_locked(). The zeroed task_list makes list_empty()\nreturn false, so swake_up_locked() dereferences a NULL list entry,\ntriggering a KASAN wild-memory-access.\"\n\nFix the chance of a spurious IRQ causing an uninitialized pointer\ndereference by moving init_completion() above devm_request_irq().",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64500"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7090c0d29708ee305022d0ea7b37612b33242fa2"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0e33587967b356519aa6f220b5b43c6976320397"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1ddf7b6ffb8ebb22b92a184a9eaa76277ef0c7cd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/820c4f15353efe9a9429ae86ccceeaf4e0e4e585"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/48eccc6caed4e62c0f199ab3a3772fa969cd3b2d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9e2e8b8cdfd37ae7c7a8a5c96c59e98a768731c4"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2f18c5551aa97ca7f39dbb151c67c9053ccadc17"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e561b35633f450ee607e87a6401d97f156a0cd54"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}