{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89566",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.726Z",
        "datePublished": "2026-09-11T19:44:36.599Z",
        "dateUpdated": "2026-10-21T12:47:53.628Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:47:53.628Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: check need_resched() when skipping busy checkpoint buffers\n\njournal_shrink_one_cp_list() skips busy checkpoint buffers when called\nwith JBD2_SHRINK_BUSY_SKIP.  The continue statement on this path also\nskips the need_resched() check at the end of the loop body.\n\nConsequently, when a checkpoint list contains mostly busy buffers, the\nshrinker can walk the entire list while holding journal->j_list_lock,\neven when a reschedule has been requested.  Large checkpoint lists under\nmemory pressure can therefore cause long lock hold times and leave other\nCPUs spinning on j_list_lock, resulting in soft lockups or RCU stalls.\n\nRoute the busy-buffer path through the need_resched() check so that the\nshrinker can release j_list_lock and reschedule promptly, restoring\nparity with the clean-buffer path, which already checks need_resched().\nThis does not change which checkpoint buffers are eligible for removal."
                }
            ],
            "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": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "dc7ece0b827fe3b748db685fb85cd2fc3710c3f9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "f83c23286e54180cdc83a36463a60003534cc290",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "f9182a85991a0ad5cd2940df6db75f40ad90028c",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "595cac7f1b32d009b97f83dd2b2d6a1a445e9bb4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "f213e12ff5c9590b1034ae8da0e6d09665c772d0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "9c31bb2684f8035beca0275349d19d679b679ffb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5fda50e262e65bd553ff777c4b280afd1495a18b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "557fda9ed70ebf8eda2620ba3d746215285a1303",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "5.15.129",
                            "lessThan": "5.16",
                            "status": "affected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.50",
                            "lessThan": "6.2",
                            "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": "6.6.160",
                            "lessThanOrEqual": "6.6.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.109",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.50",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.4",
                            "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": "6.5",
                                    "versionEndExcluding": "6.6.160"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "6.12.109"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "6.18.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "7.2.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.5",
                                    "versionEndExcluding": "7.3"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.15.129"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.1.50"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.4.13"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/dc7ece0b827fe3b748db685fb85cd2fc3710c3f9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f83c23286e54180cdc83a36463a60003534cc290"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f9182a85991a0ad5cd2940df6db75f40ad90028c"
                },
                {
                    "url": "https://git.kernel.org/stable/c/595cac7f1b32d009b97f83dd2b2d6a1a445e9bb4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/f213e12ff5c9590b1034ae8da0e6d09665c772d0"
                }
            ],
            "title": "jbd2: check need_resched() when skipping busy checkpoint buffers",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}