{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2021-47622",
        "ASSIGNER": "cve@kernel.org",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ufs: Fix a deadlock in the error handler\n\nThe following deadlock has been observed on a test setup:\n\n - All tags allocated\n\n - The SCSI error handler calls ufshcd_eh_host_reset_handler()\n\n - ufshcd_eh_host_reset_handler() queues work that calls\n   ufshcd_err_handler()\n\n - ufshcd_err_handler() locks up as follows:\n\nWorkqueue: ufs_eh_wq_0 ufshcd_err_handler.cfi_jt\nCall trace:\n __switch_to+0x298/0x5d8\n __schedule+0x6cc/0xa94\n schedule+0x12c/0x298\n blk_mq_get_tag+0x210/0x480\n __blk_mq_alloc_request+0x1c8/0x284\n blk_get_request+0x74/0x134\n ufshcd_exec_dev_cmd+0x68/0x640\n ufshcd_verify_dev_init+0x68/0x35c\n ufshcd_probe_hba+0x12c/0x1cb8\n ufshcd_host_reset_and_restore+0x88/0x254\n ufshcd_reset_and_restore+0xd0/0x354\n ufshcd_err_handler+0x408/0xc58\n process_one_work+0x24c/0x66c\n worker_thread+0x3e8/0xa4c\n kthread+0x150/0x1b4\n ret_from_fork+0x10/0x30\n\nFix this lockup by making ufshcd_exec_dev_cmd() allocate a reserved\nrequest."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "n/a"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "Linux",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "Linux",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "<",
                                            "version_name": "1da177e4c3f4",
                                            "version_value": "493c9e850677"
                                        },
                                        {
                                            "version_value": "not down converted",
                                            "x_cve_json_5_version_data": {
                                                "versions": [
                                                    {
                                                        "version": "5.15.25",
                                                        "lessThanOrEqual": "5.15.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.16.11",
                                                        "lessThanOrEqual": "5.16.*",
                                                        "status": "unaffected",
                                                        "versionType": "custom"
                                                    },
                                                    {
                                                        "version": "5.17",
                                                        "lessThanOrEqual": "*",
                                                        "status": "unaffected",
                                                        "versionType": "original_commit_for_fix"
                                                    }
                                                ],
                                                "defaultStatus": "affected"
                                            }
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724"
            },
            {
                "url": "https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768"
            },
            {
                "url": "https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b",
                "refsource": "MISC",
                "name": "https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b"
            }
        ]
    },
    "generator": {
        "engine": "bippy-c9c4e1df01b2"
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}