{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ce0887ac96d35c7105090e166bb0807dc0a0e838"
            },
            {
              "fixed": "88daaed26e17e1c7e851859b5bbb4f0e1ab6d0e9"
            },
            {
              "fixed": "81b2cfe767943922eca906a2a5af23a0ce5d0f35"
            },
            {
              "fixed": "6bba72b8ee68ad631b94bd439592cba46de54d7d"
            },
            {
              "fixed": "75268f6cfe26b09a7e4d3216367e87fe9e2a26aa"
            },
            {
              "fixed": "b1eca07303594ca27f5dc360a6946bd7e1f5b04c"
            },
            {
              "fixed": "b42dc26a14b4ad5d6daaada11ec4c70744141c25"
            },
            {
              "fixed": "d801906165cb5cc250d5cbe44935594e170be3e2"
            },
            {
              "fixed": "6bdbfab96e0cf25e5f57dac5c09dc1749751a4bf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "5.6.0"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.109"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.50"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89694.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnfsd: check client ownership when cancelling a copy-notify stateid\n\nOn the OFFLOAD_CANCEL path (clp != NULL), manage_cpntf_state() freed the\ntarget cpntf state without checking ownership. The lookup key\nst-\u003esi_opaque.so_id is allocated cyclically (guessable) and the embedded\nclientid is the fixed per-net nn-\u003es2s_cp_cl_id, so any authenticated\nNFSv4.2 client could cancel and free another client's copy-notify\nstateid.\n\nCompare the creating clientid recorded in state-\u003ecp_p_clid against the\nrequesting client's cl_clientid and return nfserr_bad_stateid on a\nmismatch instead of freeing the entry.",
  "id": "CVE-2026-89694",
  "modified": "2026-09-15T03:30:45.494170596Z",
  "published": "2026-09-11T19:46:13.519Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6bba72b8ee68ad631b94bd439592cba46de54d7d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6bdbfab96e0cf25e5f57dac5c09dc1749751a4bf"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/75268f6cfe26b09a7e4d3216367e87fe9e2a26aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/81b2cfe767943922eca906a2a5af23a0ce5d0f35"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/88daaed26e17e1c7e851859b5bbb4f0e1ab6d0e9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1eca07303594ca27f5dc360a6946bd7e1f5b04c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b42dc26a14b4ad5d6daaada11ec4c70744141c25"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d801906165cb5cc250d5cbe44935594e170be3e2"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89694.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-89694"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "nfsd: check client ownership when cancelling a copy-notify stateid"
}