{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-89457",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-89457"
  ],
  "published": "2026-09-11T19:47:07Z",
  "summary": "s390/dasd: Guard sysfs discipline callbacks against unallocated private data",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Guard sysfs discipline callbacks against unallocated private data\n\nSeveral sysfs show/store handlers call a discipline callback that\ndereferences device->private, either directly or through the\nDASD_DEFINE_ATTR() macro. During dasd_generic_set_online() the discipline\nis assigned before check_device() allocates device->private, so an\nunprivileged read of one of these world-readable attributes in that window\ndereferences a NULL pointer and panics.\n\nGuard the dereference inside each callback that actually touches\ndevice->private.",
  "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-2026-89457"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/644b666c202cce12ccfcf9ded67089b18f4f7659"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4a042d8e5f34282577ece50515cea8bb1246914d"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/bd8b4572528f9604a13bf3c7c2a167f5cf222f72"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/57db27ccc162afe0726cffec0ae62e410ed2d0e9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/536407b272402af679155910d7fdeeb4834eefb9"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6452c13646af7c13d7f6668b6690cfb2427e7f7b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/449f3bada7a9fad8b8cdf4bb20baf27ee9ca56c5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/2a1780f9fc2493bd34c418a0be6fc58943afcecf"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-14T12:06:03Z"
  }
}