{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90418",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.813Z",
        "datePublished": "2026-09-17T16:09:43.223Z",
        "dateUpdated": "2026-10-19T09:03:22.352Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T09:03:22.352Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnilfs2: fix BUG in nilfs_copy_dirty_pages() on dirty state mismatch\n\nSyzbot reported a kernel BUG triggered within nilfs_copy_dirty_pages(),\nwhich copies dirty DAT file folios/pages to its shadow page cache.  The\nBUG occurs when a retrieved dirty folio/page unexpectedly loses its\n'dirty' status.\n\nThis issue arises because, since the commit referenced below, the 'dirty'\nflag of a folio/page can be cleared asynchronously after the filesystem\ndetects metadata corruption and transitions to read-only mode.\n\nResolve the issue by returning an -EROFS error if the filesystem has\ntransitioned to read-only mode.  Also change the behavior to issue a\nkernel warning only once instead of triggering a kernel BUG when this\nunexpected 'dirty' state is detected while the filesystem is not in\nread-only mode."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/nilfs2/page.c"
                    ],
                    "versions": [
                        {
                            "version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
                            "lessThan": "5166a21b12f549774f2983fa86d2526ea9e66ace",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
                            "lessThan": "4e1f21e7540b25d83f86b50780836ed7d2afcc93",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
                            "lessThan": "3904fb0ee741ebbbc27ec8f50a9bb6cd31e8af05",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
                            "lessThan": "f181155baf0c93a74ebe804c6cecbe970e78ee9e",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "8c26c4e2694a163d525976e804d81cd955bbb40c",
                            "lessThan": "66f4ad3ce158902e5f98afea93189972ed8750c2",
                            "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/nilfs2/page.c"
                    ],
                    "versions": [
                        {
                            "version": "3.10",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "3.10",
                            "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": "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/5166a21b12f549774f2983fa86d2526ea9e66ace"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4e1f21e7540b25d83f86b50780836ed7d2afcc93"
                },
                {
                    "url": "https://git.kernel.org/stable/c/3904fb0ee741ebbbc27ec8f50a9bb6cd31e8af05"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f181155baf0c93a74ebe804c6cecbe970e78ee9e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/66f4ad3ce158902e5f98afea93189972ed8750c2"
                }
            ],
            "title": "nilfs2: fix BUG in nilfs_copy_dirty_pages() on dirty state mismatch",
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                "engine": "bippy-1.2.0"
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        }
    }
}