{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "577b785f55168d5acb3d123ba41bfe8d7981e044"
            },
            {
              "fixed": "d0f37d77b9b4b241e0b30ef2562f6353cbda3bec"
            },
            {
              "fixed": "64a41f4a9a968f54f3792399aa4d2a9fdb23b0a5"
            },
            {
              "fixed": "f2951ebd15c36a1ea4820a7f0cbb0b5f1c028b73"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.30"
            },
            {
              "fixed": "6.18.52"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90013.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ntracing: Take trace_array reference when opening options file\n\nThe options files do not take the trace_array reference for the options\nthey represent. This could cause a use-after-free kernel crash if one of\nthese files is opened by one task and another task removes the instance\nthat the option is for. Because it doesn't take a reference upon opening,\nit will not stop the removal which will free the options descriptor that\nis being used.\n\nAs the options are somewhat dynamic in their creation at boot up, each\nfile represents a flag in the trace_array. The trace_array has an array of\nindexes to represent each of these flags that is stored in the\ntrace_flags_index array. The address of the index array element is used to\npass to the inode-\u003ei_private pointer. Then that element is read which\nholds the index (which represents the flag) and then the index is used to\ncalculate the trace_array descriptor from its trace_flags_index array.\n\nOne issue is that the index element can not be referenced until the\ntrace_array's reference is taken. To handle this, create a new helper\nfunction called: trace_array_options_get() that will iterate all the\nexisting trace_arrays in the ftrace_trace_arrays list (under the\ntrace_types_lock), and compare the passed in address of the index element\nwith the entire array of the trace_array's trace_flags_index array.\nIf it matches, then up the corresponding trace_array's reference and\nreturn.",
  "id": "CVE-2026-90013",
  "modified": "2026-09-18T03:30:50.843709988Z",
  "published": "2026-09-16T10:33:20.136Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64a41f4a9a968f54f3792399aa4d2a9fdb23b0a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d0f37d77b9b4b241e0b30ef2562f6353cbda3bec"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f2951ebd15c36a1ea4820a7f0cbb0b5f1c028b73"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90013.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90013"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "tracing: Take trace_array reference when opening options file"
}