{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89567",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.726Z",
        "datePublished": "2026-09-11T19:44:37.332Z",
        "dateUpdated": "2026-10-21T12:47:54.662Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-21T12:47:54.662Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\njbd2: bound shrinker scans by examined checkpoint buffers\n\nThe jbd2 shrinker currently accounts only checkpoint buffers that it\nsuccessfully releases against nr_to_scan.  Busy buffers therefore do not\nconsume the scan budget.\n\nIf a checkpoint transaction contains mostly busy buffers, the shrinker\ncan scan its entire checkpoint list while holding journal->j_list_lock.\nLarge checkpoint lists can result in excessive lock hold times and leave\nother CPUs spinning on j_list_lock, causing soft lockups or RCU stalls.\n\nPass nr_to_scan into journal_shrink_one_cp_list() and decrement it for\nevery buffer examined, including busy buffers.  Pass NULL from checkpoint\ncleanup paths so their existing full-list behavior is preserved.\n\nThis restores the scan-budget semantics that existed before\njournal_shrink_one_cp_list() was changed to always scan a complete\ncheckpoint list."
                }
            ],
            "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": "6b5366ba63a58819396045ab146bd37ff9e503c6",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "edf5fcd0469b7467bd5b37a79502c8d9c3257dbb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "71c6b872c746465fa4b5def239cb296173ca8216",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "c2c0fb364685b8996c357d3b050394959b29d6e0",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "b98dba273a0e47dbfade89c9af73c5b012a4eabb",
                            "lessThan": "15cb16496446b94e67f7abcb049b8e2c75cd3d02",
                            "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/6b5366ba63a58819396045ab146bd37ff9e503c6"
                },
                {
                    "url": "https://git.kernel.org/stable/c/edf5fcd0469b7467bd5b37a79502c8d9c3257dbb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/71c6b872c746465fa4b5def239cb296173ca8216"
                },
                {
                    "url": "https://git.kernel.org/stable/c/c2c0fb364685b8996c357d3b050394959b29d6e0"
                },
                {
                    "url": "https://git.kernel.org/stable/c/15cb16496446b94e67f7abcb049b8e2c75cd3d02"
                }
            ],
            "title": "jbd2: bound shrinker scans by examined checkpoint buffers",
            "x_generator": {
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    }
}