{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-72063",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-72063"
  ],
  "published": "2026-08-15T06:04:33Z",
  "summary": "gpio: tegra: do not call pinctrl for GPIO direction",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngpio: tegra: do not call pinctrl for GPIO direction\n\ntegra_gpio_direction_input() and tegra_gpio_direction_output() already\nprogram the GPIO controller direction registers directly. The additional\npinctrl_gpio_direction_input/output() calls do not add a Tegra pinctrl\noperation, because the Tegra pinmux ops provide GPIO request/free\nhandling but no gpio_set_direction hook.\n\nThe extra call still enters the pinctrl core and takes pctldev->mutex.\nShared GPIO users can call the direction path while holding their\nper-line spinlock, so this otherwise redundant pinctrl direction call can\nsleep in an atomic context.\n\nThis was found by our static analysis tool and then confirmed by manual\nreview of tegra_gpio_probe(), the Tegra GPIO direction callbacks and the\nTegra pinctrl ops. The reviewed path has a default non-sleeping\nstruct gpio_chip while the direction callback still enters the pinctrl\nmutex path.\n\nA directed runtime validation kept the same non-sleeping chip registration\nand drove:\n\n  gpio_shared_proxy_direction_output()\n  gpiod_direction_output_raw_commit()\n  tegra_gpio_direction_output()\n  pinctrl_gpio_direction_output()\n\nLockdep reported a sleep-in-atomic warning with the shared GPIO spinlock\nheld and pinctrl_get_device_gpio_range() plus tegra_gpio_direction_output()\non the stack.\n\nDo not mark the whole chip as can_sleep to paper over this: can_sleep\ndescribes whether get()/set() may sleep, and Tegra value access is MMIO.\nRemove the redundant pinctrl direction calls and keep pinctrl involvement\nin the existing request/free path.",
  "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": "6.1.184",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-72063"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/89904b4f1dc0f9550c3f206dcdfceed0b7ce7c49"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d3b92d16e1c4debec7526b6dbb2d98d0aeed796b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/616188becd4a208afbae1653fc5241e1748bae80"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e57a4845b0da60a7b9f052160878097826320954"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/cd17c5a1d9f186b57e9e2949be427803b7110a5c"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ac761e66708d51dac35c4c7f1891ea991dc788f0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/628c63f96f4564fa145f602af2d41daf9532201f"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d3e91a95b2b0fc6336dbf3ec90d831a1654d2720"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-23T12:46:35Z"
  }
}