{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-98901",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.379Z",
        "datePublished": "2026-10-23T11:54:11.554Z",
        "dateUpdated": "2026-10-26T06:56:29.179Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-26T06:56:29.179Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nksmbd: fix lease break and ack state handling\n\nDo not skip valid lease states containing WRITE_CACHING when breaking\nlevel-II/read leases for writes and truncates.\n\nHandle lease break acknowledgments according to the SMB2 rule that the\nacknowledged state must be a subset of the server's break target. Apply\nthe acknowledged state directly and keep the break pending on failed ACKs."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/smb/server/oplock.c",
                        "fs/smb/server/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9",
                            "lessThan": "17699905a381621c1cee5b6528feb05acedc86a4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9",
                            "lessThan": "3251ea36df5eef58aa207fbee48849d89b922ea6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9",
                            "lessThan": "fba4653a0b4dc2f6d42600abe21fb326292f70ff",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e2f34481b24db2fd634b5edb0a5bd0e4d38cc6e9",
                            "lessThan": "5015191096db311759fef98769270336cd8b1324",
                            "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/smb/server/oplock.c",
                        "fs/smb/server/smb2pdu.c"
                    ],
                    "versions": [
                        {
                            "version": "5.15",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.15",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.158",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.111",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.53",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "5.15",
                                    "versionEndExcluding": "6.6.158"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.12.111"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "6.18.53"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/17699905a381621c1cee5b6528feb05acedc86a4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3251ea36df5eef58aa207fbee48849d89b922ea6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/fba4653a0b4dc2f6d42600abe21fb326292f70ff"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5015191096db311759fef98769270336cd8b1324"
                }
            ],
            "title": "ksmbd: fix lease break and ack state handling",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}