{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2026-64509",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2026-07-19T15:36:31.793Z",
        "datePublished": "2026-07-25T08:52:02.486Z",
        "dateUpdated": "2026-08-17T04:56:59.904Z"
    },
    "containers": {
        "cna": {
            "providerMetadata": {
                "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
                "shortName": "Linux",
                "dateUpdated": "2026-08-17T04:56:59.904Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nrust: block: fix GenDisk cleanup paths\n\nGenDiskBuilder::build() still has fallible work after\n__blk_mq_alloc_disk(), but its error path only recovers the\nforeign queue data. That leaks the temporary gendisk and\nrequest_queue until later teardown. If the caller moved the last\nArc<TagSet<T>> into build(), the leaked queue can retain blk-mq\nstate after the tag set is dropped.\n\nFix the pre-registration failure path by dropping the temporary\ngendisk reference with put_disk() before recovering queue_data,\nso disk_release() can tear down the owned queue.\n\nAlso pair GenDisk::drop() with put_disk() after del_gendisk().\nOnce a Rust GenDisk has been added with device_add_disk(),\ndel_gendisk() only unregisters it; the final gendisk reference\nstill has to be dropped to complete the release path."
                }
            ],
            "affected": [
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "rust/kernel/block/mq/gen_disk.rs"
                    ],
                    "versions": [
                        {
                            "version": "3253aba3408aa4eb2e4e09365eede3e63ef7536b",
                            "lessThan": "d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3253aba3408aa4eb2e4e09365eede3e63ef7536b",
                            "lessThan": "e7636f26f77070a529c26d65afd217514ce85ce4",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3253aba3408aa4eb2e4e09365eede3e63ef7536b",
                            "lessThan": "6822a2685b4da9a87efd1fce4b042678a31ff734",
                            "status": "affected",
                            "versionType": "git"
                        },
                        {
                            "version": "3253aba3408aa4eb2e4e09365eede3e63ef7536b",
                            "lessThan": "2957771379fa335103a4b539db57bb2271e12142",
                            "status": "affected",
                            "versionType": "git"
                        }
                    ]
                },
                {
                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "affected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
                        "rust/kernel/block/mq/gen_disk.rs"
                    ],
                    "versions": [
                        {
                            "version": "6.11",
                            "status": "affected"
                        },
                        {
                            "version": "0",
                            "lessThan": "6.11",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.12.97",
                            "lessThanOrEqual": "6.12.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "6.18.39",
                            "lessThanOrEqual": "6.18.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.1.4",
                            "lessThanOrEqual": "7.1.*",
                            "status": "unaffected",
                            "versionType": "semver"
                        },
                        {
                            "version": "7.2",
                            "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": "6.11",
                                    "versionEndExcluding": "6.12.97"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "6.18.39"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "7.1.4"
                                },
                                {
                                    "vulnerable": true,
                                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                                    "versionStartIncluding": "6.11",
                                    "versionEndExcluding": "7.2"
                                }
                            ]
                        }
                    ]
                }
            ],
            "references": [
                {
                    "url": "https://git.kernel.org/stable/c/d1dcaa5229a63a6b6df7e0f673fe576cf3d6e8cb"
                },
                {
                    "url": "https://git.kernel.org/stable/c/e7636f26f77070a529c26d65afd217514ce85ce4"
                },
                {
                    "url": "https://git.kernel.org/stable/c/6822a2685b4da9a87efd1fce4b042678a31ff734"
                },
                {
                    "url": "https://git.kernel.org/stable/c/2957771379fa335103a4b539db57bb2271e12142"
                }
            ],
            "title": "rust: block: fix GenDisk cleanup paths",
            "x_generator": {
                "engine": "bippy-1.2.0"
            }
        }
    }
}