{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-90188",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-09-11T19:38:34.791Z",
        "datePublished": "2026-09-17T16:07:10.349Z",
        "dateUpdated": "2026-10-19T08:59:24.972Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-10-19T08:59:24.972Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnull_blk: free global tag_set on init error path\n\nIf shared_tags is enabled, null_setup_tagset() allocates the global tag_set\nvia null_init_global_tag_set(). If device creation later fails, err_dev\ndestroys the default devices and calls unregister_blkdev(), but never frees\nthe global tag_set. Since module init failed, null_exit() is never invoked,\nso the global tag_set's tags and maps are permanently leaked.\n\nFree the global tag_set in err_dev, matching null_exit() which does\nif (tag_set.ops) blk_mq_free_tag_set(&tag_set)."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "drivers/block/null_blk/main.c"
                    ],
                    "versions": [
                        {
                            "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
                            "lessThan": "0b2faa330184340d9418ad2c627c2ae881772e33",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
                            "lessThan": "665c94554ff0d5d88caae7f40c16c8e0a3369eda",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
                            "lessThan": "2882e1450fa4597811a951196e07553ea134eb31",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
                            "lessThan": "2b59484ac1e64dd78dbe8c6140891c6308085a75",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
                            "lessThan": "081cf37e8a0e00cd91d6df53172c9d928790a798",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "82f402fefa50f1675bf918bcd009981bd6b30ac8",
                            "lessThan": "5a1c5ff3a49ba93a1fd0b70537e7a0164071760d",
                            "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/block/null_blk/main.c"
                    ],
                    "versions": [
                        {
                            "version": "4.13",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "4.13",
                            "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": "6.12.110",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.52",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2.6",
                            "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": "4.13",
                                    "versionEndExcluding": "6.1.188"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "6.6.157"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "6.12.110"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "6.18.52"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "7.2.6"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "4.13",
                                    "versionEndExcluding": "7.3"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/0b2faa330184340d9418ad2c627c2ae881772e33"
                },
                {
                    "url": "https://git.kernel.org/stable/c/665c94554ff0d5d88caae7f40c16c8e0a3369eda"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2882e1450fa4597811a951196e07553ea134eb31"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2b59484ac1e64dd78dbe8c6140891c6308085a75"
                },
                {
                    "url": "https://git.kernel.org/stable/c/081cf37e8a0e00cd91d6df53172c9d928790a798"
                },
                {
                    "url": "https://git.kernel.org/stable/c/5a1c5ff3a49ba93a1fd0b70537e7a0164071760d"
                }
            ],
            "title": "null_blk: free global tag_set on init error path",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}