{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89694",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.749Z",
        "datePublished": "2026-09-11T19:46:13.519Z",
        "dateUpdated": "2026-10-19T08:51:07.514Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:51:07.514Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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->si_opaque.so_id is allocated cyclically (guessable) and the embedded\nclientid is the fixed per-net nn->s2s_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->cp_p_clid against the\nrequesting client's cl_clientid and return nfserr_bad_stateid on a\nmismatch instead of freeing the entry."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nfsd/nfs4state.c"
                    ],
                    "versions": [
                        {
                            "version": "ce0887ac96d35c7105090e166bb0807dc0a0e838",
                            "lessThan": "88daaed26e17e1c7e851859b5bbb4f0e1ab6d0e9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce0887ac96d35c7105090e166bb0807dc0a0e838",
                            "lessThan": "81b2cfe767943922eca906a2a5af23a0ce5d0f35",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce0887ac96d35c7105090e166bb0807dc0a0e838",
                            "lessThan": "6bba72b8ee68ad631b94bd439592cba46de54d7d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce0887ac96d35c7105090e166bb0807dc0a0e838",
                            "lessThan": "75268f6cfe26b09a7e4d3216367e87fe9e2a26aa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce0887ac96d35c7105090e166bb0807dc0a0e838",
                            "lessThan": "b1eca07303594ca27f5dc360a6946bd7e1f5b04c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce0887ac96d35c7105090e166bb0807dc0a0e838",
                            "lessThan": "b42dc26a14b4ad5d6daaada11ec4c70744141c25",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce0887ac96d35c7105090e166bb0807dc0a0e838",
                            "lessThan": "d801906165cb5cc250d5cbe44935594e170be3e2",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "ce0887ac96d35c7105090e166bb0807dc0a0e838",
                            "lessThan": "6bdbfab96e0cf25e5f57dac5c09dc1749751a4bf",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nfsd/nfs4state.c"
                    ],
                    "versions": [
                        {
                            "version": "5.6",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.6",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.109",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "lessThanOrEqual": "7.2.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.3",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
                            "cpeMatch": [
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6",
                                    "versionEndExcluding": "6.12.109"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6",
                                    "versionEndExcluding": "6.18.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6",
                                    "versionEndExcluding": "7.2.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.6",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/88daaed26e17e1c7e851859b5bbb4f0e1ab6d0e9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/81b2cfe767943922eca906a2a5af23a0ce5d0f35"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6bba72b8ee68ad631b94bd439592cba46de54d7d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/75268f6cfe26b09a7e4d3216367e87fe9e2a26aa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b1eca07303594ca27f5dc360a6946bd7e1f5b04c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/b42dc26a14b4ad5d6daaada11ec4c70744141c25"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d801906165cb5cc250d5cbe44935594e170be3e2"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6bdbfab96e0cf25e5f57dac5c09dc1749751a4bf"
                }
            ],
            "title": "nfsd: check client ownership when cancelling a copy-notify stateid",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}