{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-93114",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-93114"
  ],
  "published": "2026-09-17T16:10:40Z",
  "summary": "platform/surface: acpi-notify: Check ACPI companion before use",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nplatform/surface: acpi-notify: Check ACPI companion before use\n\nSince every platform driver can be forced to match a device that doesn't\nmatch its list of device IDs because of device_match_driver_override(),\nplatform drivers that rely on the existence of a device's ACPI companion\nobject should verify its presence.\n\nsan_probe() dereferences the result of ACPI_COMPANION() when installing\nthe GSBUS address space handler, so force-binding the driver to a device\nwithout an ACPI companion leads to a NULL pointer dereference.  The\ndereference was introduced when the probe function was switched from\nACPI_HANDLE() to ACPI_COMPANION().\n\nCheck the ACPI companion against NULL and return -ENODEV when it is\nmissing, like commit e4865a56d013 (\"ACPI: driver: Check ACPI_COMPANION()\nagainst NULL during probe\") does for the core ACPI platform drivers.",
  "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": "6.1.188",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-93114"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4faa43d4ef0b98beb6c2b77a279f4aa5d7fa2d13"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3855be0100efb98c26228c610db70a673611f3bd"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f276b62f2ce1cbff7fa50a8ee5afd8fef5a60897"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/9b6479da662c2ec4e931ed9f7228df46aa8c3766"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7fea5a310e3b2db24f7aafe64897e4e659ffbb7d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/428a82d987fcd8844e8868c85582eae75b4b5c51"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2b3a5dabe89e330413af403246b648c1890f368f"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-17T16:10:40Z"
  }
}