{
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    "cveMetadata": {
        "cveId": "CVE-2024-26899",
        "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "state": "PUBLISHED",
        "assignerShortName": "Linux",
        "dateReserved": "2024-02-19T14:20:24.187Z",
        "datePublished": "2024-04-17T10:27:49.089Z",
        "dateUpdated": "2024-08-02T00:21:05.535Z"
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                "dateUpdated": "2024-05-29T05:24:41.897Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nblock: fix deadlock between bd_link_disk_holder and partition scan\n\n'open_mutex' of gendisk is used to protect open/close block devices. But\nin bd_link_disk_holder(), it is used to protect the creation of symlink\nbetween holding disk and slave bdev, which introduces some issues.\n\nWhen bd_link_disk_holder() is called, the driver is usually in the process\nof initialization/modification and may suspend submitting io. At this\ntime, any io hold 'open_mutex', such as scanning partitions, can cause\ndeadlocks. For example, in raid:\n\nT1                              T2\nbdev_open_by_dev\n lock open_mutex [1]\n ...\n  efi_partition\n  ...\n   md_submit_bio\n\t\t\t\tmd_ioctl mddev_syspend\n\t\t\t\t  -> suspend all io\n\t\t\t\t md_add_new_disk\n\t\t\t\t  bind_rdev_to_array\n\t\t\t\t   bd_link_disk_holder\n\t\t\t\t    try lock open_mutex [2]\n    md_handle_request\n     -> wait mddev_resume\n\nT1 scan partition, T2 add a new device to raid. T1 waits for T2 to resume\nmddev, but T2 waits for open_mutex held by T1. Deadlock occurs.\n\nFix it by introducing a local mutex 'blk_holder_mutex' to replace\n'open_mutex'."
                }
            ],
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                    "product": "Linux",
                    "vendor": "Linux",
                    "defaultStatus": "unaffected",
                    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                    "programFiles": [
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                        {
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                        {
                            "version": "6.7.11",
                            "lessThanOrEqual": "6.7.*",
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                        {
                            "version": "6.8.2",
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                            "status": "unaffected",
                            "versionType": "custom"
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                        {
                            "version": "6.9",
                            "lessThanOrEqual": "*",
                            "status": "unaffected",
                            "versionType": "original_commit_for_fix"
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                    "url": "https://git.kernel.org/stable/c/1e5c5b0abaee7b62a10b9707a62083b71ad21f62"
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                },
                {
                    "url": "https://git.kernel.org/stable/c/03f12122b20b6e6028e9ed69030a49f9cffcbb75"
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            ],
            "title": "block: fix deadlock between bd_link_disk_holder and partition scan",
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