{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-93073",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-93073"
  ],
  "published": "2026-09-17T16:10:40Z",
  "summary": "dax: read holder_ops once in dax_holder_notify_failure()",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ndax: read holder_ops once in dax_holder_notify_failure()\n\ndax_holder_notify_failure() reads dax_dev->holder_ops twice without\nREAD_ONCE() -- once for the NULL check and once for the indirect\nnotify_failure() call. A concurrent fs_put_dax() can clear holder_ops\nbetween the two reads, so the check can observe a non-NULL pointer while\nthe call dereferences NULL. (kill_dax() also clears holder_ops, but only\nafter synchronize_srcu(), so it cannot race a reader that is inside\ndax_read_lock(); fs_put_dax() does no such synchronization.)\n\nFetch holder_ops once into a local with READ_ONCE() so the NULL check and\nthe indirect call observe the same value.",
  "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-2026-93073"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/1661b9bf78def01a8c96409569772d9b2592f4ba"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0a42180d5410c98829ee72d1d426fb7faf9e6873"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/ee1251621d1c7cf3155c6704542cbb358d799968"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/6a37acecc7c29136235cbc446a1b89e81414344b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/eb412f80311fc7ab6eb3203091a3fe59a5e9fd30"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/7ae9d15bdcde0f2955ae13b6a95587f9e23b2359"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-09-17T16:10:40Z"
  }
}