{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-80881",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-08-26T14:34:25.799Z",
        "datePublished": "2026-09-04T16:49:11.758Z",
        "dateUpdated": "2026-09-04T16:49:11.758Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-09-04T16:49:11.758Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nocfs2: fix buffer head management in ocfs2_read_blocks()\n\nIn ocfs2_read_blocks(), caller should't assume that buffer head returned\nby 'sb_getblk()' is exclusively owned and so 'put_bh()' always drops\nb_count from 1 to 0.  If it is not so, buffer head remains on hold and\nlikely to be returned by the next call to 'sb_getblk()' unchanged - that\nis, with BH_Uptodate bit set even if it has failed validation previously,\nthus allowing to insert that buffer head into OCFS2 metadata cache and\nsubmit it to upper layers.  To avoid such a scenario, BH_Uptodate should\nbe cleared immediately after 'validate()' callback has detected some data\ninconsistency."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/ocfs2/buffer_head_io.c"
                    ],
                    "versions": [
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                            "version": "cf76c78595ca87548ca5e45c862ac9e0949c4687",
                            "lessThan": "a4eae1499c760949a93459d11390bd1fd823d31d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
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                            "lessThan": "4ab17e328522a4df5fe0f0dcf39098118b1feeaa",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cf76c78595ca87548ca5e45c862ac9e0949c4687",
                            "lessThan": "5927acb3e2c99985a14adecd9d1b67ba191c622d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "cf76c78595ca87548ca5e45c862ac9e0949c4687",
                            "lessThan": "ecb3f9386f4353034caef77239473c627232db17",
                            "status": "affected",
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                        },
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                            "status": "affected",
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                        },
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                            "lessThan": "0e389fc290c350c67591abf4c367119f4689f310",
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                        },
                        {
                            "version": "cf76c78595ca87548ca5e45c862ac9e0949c4687",
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                            "versionType": "git"
                        },
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                            "lessThan": "6371a07148ee979af22a9d6f4c277462953a9a4a",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "01f93d5e36753fc4d06ec67f05ce78c9c6f2dd56",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "65cbd1279f4b999d56a838344a30642db24cd215",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "97e1db17bc1ef4c2e1789bc9323c7be44fba53f8",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "6c150df9c2e80b5cf86f5a0d98beb7390ad63bfc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "4.4.204",
                            "lessThan": "4.5",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.9.204",
                            "lessThan": "4.10",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.14.157",
                            "lessThan": "4.15",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "4.19.87",
                            "lessThan": "4.20",
                            "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/ocfs2/buffer_head_io.c"
                    ],
                    "versions": [
                        {
                            "version": "4.20",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.20",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.261",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.212",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.178",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.145",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.40",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.5",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
                        }
                    ]
                }
            ],
            "cpeApplicability": [
                {
                    "nodes": [
                        {
                            "operator": "OR",
                            "negate": false,
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            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/a4eae1499c760949a93459d11390bd1fd823d31d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4ab17e328522a4df5fe0f0dcf39098118b1feeaa"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5927acb3e2c99985a14adecd9d1b67ba191c622d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/ecb3f9386f4353034caef77239473c627232db17"
                },
                {
                    "url": "https://git.kernel.org/stable/c/61f7a5acb3bf8fc97dad78f54b1e8d0e1c819766"
                },
                {
                    "url": "https://git.kernel.org/stable/c/0e389fc290c350c67591abf4c367119f4689f310"
                },
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                    "url": "https://git.kernel.org/stable/c/9e7a057934cdd58e4cc94350bcfe5367bbee0f8e"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6371a07148ee979af22a9d6f4c277462953a9a4a"
                }
            ],
            "title": "ocfs2: fix buffer head management in ocfs2_read_blocks()",
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}