{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90318",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.801Z",
        "datePublished": "2026-09-17T16:08:36.174Z",
        "dateUpdated": "2026-10-19T09:01:34.596Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:01:34.596Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nfat: release buffer head after rebuilding parent\n\nfat_scan_logstart() leaves the matching directory entry's buffer head in\nsinfo.bh for the caller to release, just like fat_scan().\n\nfat_rebuild_parent() uses the directory entry to rebuild the parent inode\nfor the nostale_ro NFS export path, but does not release sinfo.bh after a\nsuccessful scan.  Release it once fat_build_inode() has consumed the\ndirectory entry data."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/fat/nfs.c"
                    ],
                    "versions": [
                        {
                            "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
                            "lessThan": "5e44b6944e11fd6647f028219ad0be4e85e9acee",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
                            "lessThan": "d2a86329152c69a6200c15b2bf618755f8563826",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
                            "lessThan": "0f18d712ba9c980e05b7e33a27cde4fe3ed2d393",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
                            "lessThan": "e38587d98d1ceac608420052c0cdd901d25878f3",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
                            "lessThan": "c6a67aa438179cad40f8ae45469e304338d65c0a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
                            "lessThan": "571ea4263d69df1b48578e4314a828ecd0604755",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
                            "lessThan": "7565e44507634514e3e1899d3acad3de43f7a2c1",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "f1e6fb0ab451dae8523fbb8c119a653b2730e938",
                            "lessThan": "83e98dbf19ab64e8528e101e20f8d50e1aaa68a8",
                            "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/fat/nfs.c"
                    ],
                    "versions": [
                        {
                            "version": "3.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.10",
                            "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": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "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": "3.10",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "5.15.221"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "3.10",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/5e44b6944e11fd6647f028219ad0be4e85e9acee"
                },
                {
                    "url": "https://git.kernel.org/stable/c/d2a86329152c69a6200c15b2bf618755f8563826"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0f18d712ba9c980e05b7e33a27cde4fe3ed2d393"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e38587d98d1ceac608420052c0cdd901d25878f3"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c6a67aa438179cad40f8ae45469e304338d65c0a"
                },
                {
                    "url": "https://git.kernel.org/stable/c/571ea4263d69df1b48578e4314a828ecd0604755"
                },
                {
                    "url": "https://git.kernel.org/stable/c/7565e44507634514e3e1899d3acad3de43f7a2c1"
                },
                {
                    "url": "https://git.kernel.org/stable/c/83e98dbf19ab64e8528e101e20f8d50e1aaa68a8"
                }
            ],
            "title": "fat: release buffer head after rebuilding parent",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}