{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-99052",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-25T10:25:14.388Z",
        "datePublished": "2026-10-23T12:22:34.168Z",
        "dateUpdated": "2026-10-30T12:41:19.103Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-30T12:41:19.103Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nselinux: preserve NATIVE_LABELS on already-initialized sb in set_mnt_opts\n\nWhen an NFSv4 filesystem exported with security_label is mounted a\nsecond time, sget_fc() returns the existing superblock and\nnfs_get_root() calls security_sb_set_mnt_opts() again on it. Since the\nsuperblock is already SB_INITIALIZED, selinux_set_mnt_opts() takes an\nearly exit without setting SECURITY_LSM_NATIVE_LABELS in\n*set_kern_flags. nfs_get_root() then sees kflags without\nSECURITY_LSM_NATIVE_LABELS set and clears NFS_CAP_SECURITY_LABEL on\nthe shared nfs_server, silently disabling per-file labeling for both\nthe new and the original mount.\n\nCommit 3815a245b501 (\"security/selinux: fix SECURITY_LSM_NATIVE_LABELS\non reused superblock\") fixed the same problem in\nselinux_sb_clone_mnt_opts().  The reused-superblock path for a plain\nsecond mount now goes through sb_set_mnt_opts rather than\nsb_clone_mnt_opts, so it needs the same treatment: on both\nSE_SBINITIALIZED early exits, set SECURITY_LSM_NATIVE_LABELS in\n*set_kern_flags when the superblock was already using\nSECURITY_FS_USE_NATVE."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "security/selinux/hooks.c"
                    ],
                    "versions": [
                        {
                            "version": "eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864",
                            "lessThan": "22987d24a159ed7df3cdc9090ca5d61e58df0cac",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864",
                            "lessThan": "2f0f1f5a3b89c1ed67e39be49d29ee7f5c96e039",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864",
                            "lessThan": "dc579e43b13cb65e55eabaae4f1a950e43567fb1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864",
                            "lessThan": "a545def625860d4ccedc14fe45e884a62a041cef",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864",
                            "lessThan": "a6da93c625b3557dd23ff6db45d2d1bafeae1565",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864",
                            "lessThan": "5509d498e1b9edafebd5a60ba3cb9ecfda23dc2b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864",
                            "lessThan": "c997832414f1d846de0a1fa38d7d4f62ba2ea917",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "eb9ae686507bc5a5ca78e6b3fbe629cd5cc67864",
                            "lessThan": "28b7260548af3d35773477993ad4e4de41578dd7",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "security/selinux/hooks.c"
                    ],
                    "versions": [
                        {
                            "version": "3.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.273",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.224",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.191",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.113",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.57",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.11",
                            "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": "3.11",
                                    "versionEndExcluding": "5.10.273"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "5.15.224"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "6.1.191"
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "6.12.113"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "7.2.11"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.11",
                                    "versionEndExcluding": "7.3"
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/22987d24a159ed7df3cdc9090ca5d61e58df0cac"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2f0f1f5a3b89c1ed67e39be49d29ee7f5c96e039"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dc579e43b13cb65e55eabaae4f1a950e43567fb1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a545def625860d4ccedc14fe45e884a62a041cef"
                },
                {
                    "url": "https://git.kernel.org/stable/c/a6da93c625b3557dd23ff6db45d2d1bafeae1565"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5509d498e1b9edafebd5a60ba3cb9ecfda23dc2b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c997832414f1d846de0a1fa38d7d4f62ba2ea917"
                },
                {
                    "url": "https://git.kernel.org/stable/c/28b7260548af3d35773477993ad4e4de41578dd7"
                }
            ],
            "title": "selinux: preserve NATIVE_LABELS on already-initialized sb in set_mnt_opts",
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                "engine": "bippy-1.2.0"
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}