{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix slab-use-after-free in qd_put\n\nCommit a475c5dd16e5 (\"gfs2: Free quota data objects synchronously\")\nstarted freeing quota data objects during filesystem shutdown instead of\nputting them back onto the LRU list, but it failed to remove these\nobjects from the LRU list, causing LRU list corruption.  This caused\nuse-after-free when the shrinker (gfs2_qd_shrink_scan) tried to access\nalready-freed objects on the LRU list.\n\nFix this by removing qd objects from the LRU list before freeing them in\nqd_put().\n\nInitial fix from Deepanshu Kartikey \u003ckartikey406@gmail.com\u003e."
    }
  ],
  "id": "CVE-2026-45861",
  "lastModified": "2026-05-27T14:48:31.480",
  "metrics": {},
  "published": "2026-05-27T14:16:58.323",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/1d47922b98046b8070a77347fb883a6523792803"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/22150a7d401d9e9169b9b68e05bed95f7f49bf69"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/80fff26d7a0c3926b511661c27eecc811a420eef"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ca7c67bdd293089b3483f18886d6b2d0037d2ad9"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}

Show details on source website

{
  "affected": [],
  "aliases": [
    "CVE-2026-45861"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-27T14:16:58Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\ngfs2: Fix slab-use-after-free in qd_put\n\nCommit a475c5dd16e5 (\"gfs2: Free quota data objects synchronously\")\nstarted freeing quota data objects during filesystem shutdown instead of\nputting them back onto the LRU list, but it failed to remove these\nobjects from the LRU list, causing LRU list corruption.  This caused\nuse-after-free when the shrinker (gfs2_qd_shrink_scan) tried to access\nalready-freed objects on the LRU list.\n\nFix this by removing qd objects from the LRU list before freeing them in\nqd_put().\n\nInitial fix from Deepanshu Kartikey \u003ckartikey406@gmail.com\u003e.",
  "id": "GHSA-v5c4-8mx9-g6x5",
  "modified": "2026-05-27T15:33:13Z",
  "published": "2026-05-27T15:33:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-45861"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1d47922b98046b8070a77347fb883a6523792803"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22150a7d401d9e9169b9b68e05bed95f7f49bf69"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/80fff26d7a0c3926b511661c27eecc811a420eef"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca7c67bdd293089b3483f18886d6b2d0037d2ad9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

{
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    "category": "csaf_vex",
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    "distribution": {
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        "url": "https://www.first.org/tlp/"
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    "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"
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      {
        "category": "self",
        "summary": "CVE-2026-45861 gfs2: Fix slab-use-after-free in qd_put - VEX",
        "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-45861.json"
      },
      {
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        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "gfs2: Fix slab-use-after-free in qd_put",
    "tracking": {
      "current_release_date": "2026-05-29T01:40:10.000Z",
      "generator": {
        "date": "2026-05-29T07:23:45.793Z",
        "engine": {
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      "id": "msrc_CVE-2026-45861",
      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "revision_history": [
        {
          "date": "2026-05-28T01:10:08.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2026-05-28T14:41:12.000Z",
          "legacy_version": "1.1",
          "number": "2",
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          "legacy_version": "2",
          "number": "3",
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        }
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      "status": "final",
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    }
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  "product_tree": {
    "branches": [
      {
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          {
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              {
                "category": "product_version",
                "name": "3.0",
                "product": {
                  "name": "Azure Linux 3.0",
                  "product_id": "17084"
                }
              }
            ],
            "category": "product_name",
            "name": "Azure Linux"
          },
          {
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              {
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                "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"
          }
        ],
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        "name": "Microsoft"
      }
    ],
    "relationships": [
      {
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        "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-2026-45861",
      "notes": [
        {
          "category": "general",
          "text": "Linux",
          "title": "Assigning CNA"
        }
      ],
      "product_status": {
        "known_affected": [
          "17084-1"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2026-45861 gfs2: Fix slab-use-after-free in qd_put - VEX",
          "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-45861.json"
        }
      ],
      "remediations": [
        {
          "category": "none_available",
          "date": "2026-05-28T01:10:08.000Z",
          "details": "There is no fix available for this vulnerability as of now",
          "product_ids": [
            "17084-1"
          ]
        }
      ],
      "title": "gfs2: Fix slab-use-after-free in qd_put"
    }
  ]
}