{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2025-71204",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-01-31T11:36:51.194Z",
        "datePublished": "2026-02-14T16:27:03.252Z",
        "dateUpdated": "2026-08-05T12:12:32.645Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-05T12:12:32.645Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb/server: fix refcount leak in parse_durable_handle_context()\n\nWhen the command is a replay operation and -ENOEXEC is returned,\nthe refcount of ksmbd_file must be released."
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "version": "3.1",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH"
                    },
                    "scenarios": [
                        {
                            "lang": "en",
                            "value": "AV:N - ksmbd processes SMB2 CREATE requests received remotely over TCP, normally port 445.\nAC:L - The attacker controls the ClientGuid, CreateGuid, and replay flag and can deterministically create a matching handle before sending duplicate DH2Q requests; no race or uncontrollable timing is required.\nPR:N - Although SMB2 CREATE requires a valid session and tree connection, a credential-free guest session on a guest-enabled disk share satisfies these gates in a reasonable deployment.\nUI:N - Exploitation requires only attacker-generated SMB requests and no action by another user.\nS:U - The vulnerability and resulting resource exhaustion remain within the host kernel and ksmbd security authority without crossing a VM, sandbox, or IOMMU boundary.\nC:N - The affected path only leaks a reference to an existing ksmbd_file and performs no out-of-bounds read, use-after-free, or information disclosure.\nI:N - The leaked reference prevents cleanup but provides no memory-write primitive or unauthorized modification; the separate replay-flag use-after-free is not caused by this missing put.\nA:H - Repeated requests can permanently pin global file-table entries, underlying open files, oplocks, and locks while preventing restoration of ksmbd's global file limit. Exhausting that limit denies subsequent SMB file opens across all shares and clients."
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/server/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "8df4bcdb0a4232192b2445256c39b787d58ef14d",
                            "lessThan": "07df5ff4f6490a5c96715b7c562e0b2908422e04",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
                            "lessThan": "8a15107c4c031fb19737bf2eb4000f847f1d5e4c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
                            "lessThan": "70dd3513ed6ac8c6cab23f72c5b19f44ca89de9d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c8efcc786146a951091588e5fa7e3c754850cb3c",
                            "lessThan": "3296c3012a9d9a27e81e34910384e55a6ff3cff0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6.6.32",
                            "lessThan": "6.6.124",
                            "status": "affected",
                            "versionType": "semver"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/server/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "6.9",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.9",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.124",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.70",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.10",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.19",
                            "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": "6.6.32",
                                    "versionEndExcluding": "6.6.124"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.12.70"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.18.10"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.9",
                                    "versionEndExcluding": "6.19"
                                }
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/07df5ff4f6490a5c96715b7c562e0b2908422e04"
                },
                {
                    "url": "https://git.kernel.org/stable/c/8a15107c4c031fb19737bf2eb4000f847f1d5e4c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/70dd3513ed6ac8c6cab23f72c5b19f44ca89de9d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3296c3012a9d9a27e81e34910384e55a6ff3cff0"
                }
            ],
            "title": "smb/server: fix refcount leak in parse_durable_handle_context()",
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    }
}