{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: unittest: fix use-after-free in testdrv_probe()\n\nThe function testdrv_probe() retrieves the device_node from the PCI\ndevice, applies an overlay, and then immediately calls of_node_put(dn).\nThis releases the reference held by the PCI core, potentially freeing\nthe node if the reference count drops to zero. Later, the same freed\npointer \u0027dn\u0027 is passed to of_platform_default_populate(), leading to a\nuse-after-free.\n\nThe reference to pdev-\u003edev.of_node is owned by the device model and\nshould not be released by the driver. Remove the erroneous of_node_put()\nto prevent premature freeing."
    }
  ],
  "id": "CVE-2026-45989",
  "lastModified": "2026-05-27T14:48:03.013",
  "metrics": {},
  "published": "2026-05-27T14:17:16.413",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-45989"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:17:16Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nof: unittest: fix use-after-free in testdrv_probe()\n\nThe function testdrv_probe() retrieves the device_node from the PCI\ndevice, applies an overlay, and then immediately calls of_node_put(dn).\nThis releases the reference held by the PCI core, potentially freeing\nthe node if the reference count drops to zero. Later, the same freed\npointer \u0027dn\u0027 is passed to of_platform_default_populate(), leading to a\nuse-after-free.\n\nThe reference to pdev-\u003edev.of_node is owned by the device model and\nshould not be released by the driver. Remove the erroneous of_node_put()\nto prevent premature freeing.",
  "id": "GHSA-26rf-29mw-gf9h",
  "modified": "2026-05-27T15:33:19Z",
  "published": "2026-05-27T15:33:19Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45989"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/07fd339b2c253205794bea5d9b4b7548a4546c56"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0ba03e06f037df704d9b032e36d417633e2326bc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5b6122a67a295f8a08b7c18d908a1bd974dfaec8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6b2023286d2c6ed3bf964fb92e34c9c14d42eb69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d68347b07b9801791c9eaab8f772770b52b8cd5c"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2026-45989 of: unittest: fix use-after-free in testdrv_probe() - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-45989.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "of: unittest: fix use-after-free in testdrv_probe()",
    "tracking": {
      "current_release_date": "2026-05-29T01:43:26.000Z",
      "generator": {
        "date": "2026-05-29T07:23:45.828Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2026-45989",
      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-05-28T01:04:23.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-05-28T14:47:05.000Z",
          "legacy_version": "1.1",
          "number": "2",
          "summary": "Information published."
        },
        {
          "date": "2026-05-29T01:43:26.000Z",
          "legacy_version": "2",
          "number": "3",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "3"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "azl3 kernel 0:6.6.139.1-1.azl3",
                "product": {
                  "name": "azl3 kernel 0:6.6.139.1-1.azl3",
                  "product_id": "1"
                }
              }
            ],
            "category": "product_name",
            "name": "kernel"
          }
        ],
        "category": "vendor",
        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
        "category": "default_component_of",
        "full_product_name": {
          "name": "azl3 kernel 0:6.6.139.1-1.azl3 as a component of Azure Linux 3.0",
          "product_id": "17084-1"
        },
        "product_reference": "1",
        "relates_to_product_reference": "17084"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2026-45989",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_affected": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-45989 of: unittest: fix use-after-free in testdrv_probe() - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-45989.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-05-28T01:04:23.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        }
      ],
      "title": "of: unittest: fix use-after-free in testdrv_probe()"
    }
  ]
}