{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-80562",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-80562"
  ],
  "published": "2026-08-26T14:37:59Z",
  "summary": "gpio: ml-ioh: use raw_spinlock_t for the register lock",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: ml-ioh: use raw_spinlock_t for the register lock\n\nioh_irq_type() is registered as the irq_chip .irq_set_type callback and\ntakes chip->spinlock with spin_lock_irqsave().  This callback is reached\nfrom __setup_irq() -> __irq_set_trigger() -> chip->irq_set_type() while\nthe caller holds desc->lock, a raw_spinlock_t, with hardirqs disabled.\nThat context is not sleepable, but on PREEMPT_RT a regular spinlock_t is\nan rtmutex-backed sleeping lock, so acquiring it there is invalid.\nioh_irq_enable() and ioh_irq_disable() take the same lock from the\n.irq_enable/.irq_disable callbacks, which are likewise invoked with\ndesc->lock held.\n\nConvert the register lock to raw_spinlock_t.  The same lock also\nserializes the GPIO direction/value callbacks and the suspend/resume\nregister save/restore, and those critical sections only perform short\nsequences of MMIO register accesses (ioread32()/iowrite32()); the\n.irq_set_type callback additionally emits a dev_warn() on an unsupported\ntype.  None of these are sleepable operations, so keeping this register\nlock non-sleeping is appropriate for the irqchip callbacks and does not\nchange the GPIO-side locking contract.\n\nThis is the same fix as commit a02b8950d619 (\"gpio: pch: use\nraw_spinlock_t for the register lock\"); this driver shares the same\nstructure as gpio-pch.",
  "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": "6.1.185",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-80562"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/431b10133113537660a6090a2856b0d74d1b06de"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/359e6b1168c9a62a7bd214ace476aaa2d57eebe8"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/63d2230e5076c12f93d2a1d1bff2fbbf6cf32f3c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b6505a4cea45dd92eb753581b1ad9b524b5fcc34"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/84be002b40d30c56a91873b236e2d9001bbee363"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bc7934d0acd4fc1c7e5b7c68debdb4a991121628"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0559b86611c35d342dd48542ea26a9e437046bf6"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/600411ea1f2443fdf5b1af9b6480f616d7aff9d0"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-27T12:40:42Z"
  }
}