{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-23221",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-23221"
  ],
  "published": "2026-02-18T14:54:17Z",
  "summary": "bus: fsl-mc: fix use-after-free in driver_override_show()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbus: fsl-mc: fix use-after-free in driver_override_show()\n\nThe driver_override_show() function reads the driver_override string\nwithout holding the device_lock. However, driver_override_store() uses\ndriver_set_override(), which modifies and frees the string while holding\nthe device_lock.\n\nThis can result in a concurrent use-after-free if the string is freed\nby the store function while being read by the show function.\n\nFix this by holding the device_lock around the read operation.",
  "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": "6.1.164",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-23221"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c71dfb7833db7af652ee8f65011f14c97c47405d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/c424e72cfa67e7e1477035058a8a659f2c0ea637"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/b1983840287303e0dfb401b1b6cecc5ea7471e90"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/dd8ba8c0c3f3916d4ee1e3a09da9cd5caff5d227"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1d6bd6183e723a7b256ff34bbb5b498b5f4f2ec0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/a2ae33e1c6361e960a4d00f7cf75d880b54f9528"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/148891e95014b5dc5878acefa57f1940c281c431"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-05-12T04:54:46Z"
  }
}