{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-89457",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.707Z",
        "datePublished": "2026-09-11T19:43:20.701Z",
        "dateUpdated": "2026-10-19T08:47:06.711Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:47:06.711Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ns390/dasd: Guard sysfs discipline callbacks against unallocated private data\n\nSeveral sysfs show/store handlers call a discipline callback that\ndereferences device->private, either directly or through the\nDASD_DEFINE_ATTR() macro. During dasd_generic_set_online() the discipline\nis assigned before check_device() allocates device->private, so an\nunprivileged read of one of these world-readable attributes in that window\ndereferences a NULL pointer and panics.\n\nGuard the dereference inside each callback that actually touches\ndevice->private."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/s390/block/dasd_eckd.c"
                    ],
                    "versions": [
                        {
                            "version": "c729696bcf8b23450043dd9c9972c15e53419ae4",
                            "lessThan": "644b666c202cce12ccfcf9ded67089b18f4f7659",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c729696bcf8b23450043dd9c9972c15e53419ae4",
                            "lessThan": "4a042d8e5f34282577ece50515cea8bb1246914d",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c729696bcf8b23450043dd9c9972c15e53419ae4",
                            "lessThan": "bd8b4572528f9604a13bf3c7c2a167f5cf222f72",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c729696bcf8b23450043dd9c9972c15e53419ae4",
                            "lessThan": "57db27ccc162afe0726cffec0ae62e410ed2d0e9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c729696bcf8b23450043dd9c9972c15e53419ae4",
                            "lessThan": "536407b272402af679155910d7fdeeb4834eefb9",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c729696bcf8b23450043dd9c9972c15e53419ae4",
                            "lessThan": "6452c13646af7c13d7f6668b6690cfb2427e7f7b",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c729696bcf8b23450043dd9c9972c15e53419ae4",
                            "lessThan": "449f3bada7a9fad8b8cdf4bb20baf27ee9ca56c5",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "c729696bcf8b23450043dd9c9972c15e53419ae4",
                            "lessThan": "2a1780f9fc2493bd34c418a0be6fc58943afcecf",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/s390/block/dasd_eckd.c"
                    ],
                    "versions": [
                        {
                            "version": "5.3",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "5.3",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.10.270",
                            "lessThanOrEqual": "5.10.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "5.15.221",
                            "lessThanOrEqual": "5.15.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.1.188",
                            "lessThanOrEqual": "6.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.6.157",
                            "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": "5.3",
                                    "versionEndExcluding": "5.10.270"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "5.3",
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                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                                },
                                {
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                                    "versionStartIncluding": "5.3",
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                                    "versionStartIncluding": "5.3",
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                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/644b666c202cce12ccfcf9ded67089b18f4f7659"
                },
                {
                    "url": "https://git.kernel.org/stable/c/4a042d8e5f34282577ece50515cea8bb1246914d"
                },
                {
                    "url": "https://git.kernel.org/stable/c/bd8b4572528f9604a13bf3c7c2a167f5cf222f72"
                },
                {
                    "url": "https://git.kernel.org/stable/c/57db27ccc162afe0726cffec0ae62e410ed2d0e9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/536407b272402af679155910d7fdeeb4834eefb9"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6452c13646af7c13d7f6668b6690cfb2427e7f7b"
                },
                {
                    "url": "https://git.kernel.org/stable/c/449f3bada7a9fad8b8cdf4bb20baf27ee9ca56c5"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2a1780f9fc2493bd34c418a0be6fc58943afcecf"
                }
            ],
            "title": "s390/dasd: Guard sysfs discipline callbacks against unallocated private data",
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}