{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-53526",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2025-10-01T11:39:39.407Z",
        "datePublished": "2025-10-01T11:46:11.862Z",
        "dateUpdated": "2026-05-23T15:29:24.939Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-05-23T15:29:24.939Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: check 'jh->b_transaction' before removing it from checkpoint\n\nFollowing process will corrupt ext4 image:\nStep 1:\njbd2_journal_commit_transaction\n __jbd2_journal_insert_checkpoint(jh, commit_transaction)\n // Put jh into trans1->t_checkpoint_list\n journal->j_checkpoint_transactions = commit_transaction\n // Put trans1 into journal->j_checkpoint_transactions\n\nStep 2:\ndo_get_write_access\n test_clear_buffer_dirty(bh) // clear buffer dirty，set jbd dirty\n __jbd2_journal_file_buffer(jh, transaction) // jh belongs to trans2\n\nStep 3:\ndrop_cache\n journal_shrink_one_cp_list\n  jbd2_journal_try_remove_checkpoint\n   if (!trylock_buffer(bh))  // lock bh, true\n   if (buffer_dirty(bh))     // buffer is not dirty\n   __jbd2_journal_remove_checkpoint(jh)\n   // remove jh from trans1->t_checkpoint_list\n\nStep 4:\njbd2_log_do_checkpoint\n trans1 = journal->j_checkpoint_transactions\n // jh is not in trans1->t_checkpoint_list\n jbd2_cleanup_journal_tail(journal)  // trans1 is done\n\nStep 5: Power cut, trans2 is not committed, jh is lost in next mounting.\n\nFix it by checking 'jh->b_transaction' before remove it from checkpoint."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "fs/jbd2/checkpoint.c"
                    ],
                    "versions": [
                        {
                            "version": "b832174b7f89df3ebab02f5b485d00127a0e1a6e",
                            "lessThan": "ef5fea70e5915afd64182d155e72bfb4f275e1fc",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "e5c768d809a85e9efd0274b2efe69d4970cc0014",
                            "lessThan": "dbafe636db415299e54d9dfefc1003bda9e71c9d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "46f881b5b1758dc4a35fba4a643c10717d0cf427",
                            "lessThan": "2298f2589903a8bc03061b54b31fd97985ab6529",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "46f881b5b1758dc4a35fba4a643c10717d0cf427",
                            "lessThan": "590a809ff743e7bd890ba5fb36bc38e20a36de53",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "019b59aeb2af6b47d5c8e69c5dc1d731c8df0354",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.15.129",
                            "lessThan": "5.15.132",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.50",
                            "lessThan": "6.1.54",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.4.13",
                            "lessThan": "6.5",
                            "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/jbd2/checkpoint.c"
                    ],
                    "versions": [
                        {
                            "version": "6.5",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.5",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.132",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.54",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.5.4",
                            "lessThanOrEqual": "6.5.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6",
                            "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": "5.15.129",
                                    "versionEndExcluding": "5.15.132"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1.50",
                                    "versionEndExcluding": "6.1.54"
                                },
                                {
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "6.5.4"
                                },
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                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "6.6"
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                                    "versionStartIncluding": "6.4.13"
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            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/ef5fea70e5915afd64182d155e72bfb4f275e1fc"
                },
                {
                    "url": "https://git.kernel.org/stable/c/dbafe636db415299e54d9dfefc1003bda9e71c9d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2298f2589903a8bc03061b54b31fd97985ab6529"
                },
                {
                    "url": "https://git.kernel.org/stable/c/590a809ff743e7bd890ba5fb36bc38e20a36de53"
                }
            ],
            "title": "jbd2: check 'jh->b_transaction' before removing it from checkpoint",
            "x_generator": {
                "engine": "bippy-1.2.0"
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        }
    }
}