CVE-2021-47622

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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."}], "cpeApplicability": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.15.25", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.16.11", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionEndExcluding": "5.17", "versionStartIncluding": "5.6"}, {"criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "vulnerable": true, "versionStartIncluding": "5.4.112"}], "operator": "OR"}]}], "providerMetadata": {"orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "shortName": "Linux", "dateUpdated": "2026-05-23T15:20:21.046Z"}}}, "cveMetadata": {"cveId": "CVE-2021-47622", "state": "PUBLISHED", "dateUpdated": "2026-05-23T15:20:21.046Z", "dateReserved": "2024-07-16T11:26:52.955Z", "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "datePublished": "2024-07-16T11:29:38.339Z", "assignerShortName": "Linux"}, "dataVersion": "5.2"}

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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."}, {"lang": "es", "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: scsi: ufs: corrige un punto muerto en el controlador de errores Se ha observado el siguiente punto muerto en una configuraci\u00f3n de prueba: - Todas las etiquetas asignadas - El controlador de errores SCSI llama a ufshcd_eh_host_reset_handler() - ufshcd_eh_host_reset_handler( ) las colas funcionan que llaman a ufshcd_err_handler() - ufshcd_err_handler() se bloquea de la siguiente manera: Cola de trabajo: ufs_eh_wq_0 ufshcd_err_handler.cfi_jt Rastreo de llamadas: __switch_to+0x298/0x5d8 __schedule+0x6cc/0xa94 Schedule+0x12c/0x298 get_tag+0x210/0x480 __blk_mq_alloc_request+0x1c8/ 0x284 blk_get_request+0x74/0x134 ufshcd_exec_dev_cmd+0x68/0x640 ufshcd_verify_dev_init+0x68/0x35c ufshcd_probe_hba+0x12c/0x1cb8 ufshcd_host_reset_and_restore+0x88/0x254 _reset_and_restore+0xd0/0x354 ufshcd_err_handler+0x408/0xc58 proceso_one_work+0x24c/0x66c trabajador_thread+0x3e8/0xa4c kthread+0x150/ 0x1b4 ret_from_fork+0x10/0x30 Solucione este bloqueo haciendo que ufshcd_exec_dev_cmd() asigne una solicitud reservada."}], "id": "CVE-2021-47622", "lastModified": "2026-06-17T04:18:11.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 5.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-47622", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2024-09-10T17:00:01.684837Z", "version": "2.0.3"}}]}, "published": "2024-07-16T12:15:02.400", "references": [{"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b"}, {"source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Patch"], "url": "https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768"}], "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-667"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{"bugzilla": {"description": "kernel: scsi: ufs: Fix a deadlock in the error handler", "id": "2298106", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2298106"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-833", "details": ["In the Linux kernel, the following vulnerability has been resolved:\nscsi: ufs: Fix a deadlock in the error handler\nThe following deadlock has been observed on a test setup:\n- All tags allocated\n- The SCSI error handler calls ufshcd_eh_host_reset_handler()\n- ufshcd_eh_host_reset_handler() queues work that calls\nufshcd_err_handler()\n- ufshcd_err_handler() locks up as follows:\nWorkqueue: ufs_eh_wq_0 ufshcd_err_handler.cfi_jt\nCall trace:\n__switch_to+0x298/0x5d8\n__schedule+0x6cc/0xa94\nschedule+0x12c/0x298\nblk_mq_get_tag+0x210/0x480\n__blk_mq_alloc_request+0x1c8/0x284\nblk_get_request+0x74/0x134\nufshcd_exec_dev_cmd+0x68/0x640\nufshcd_verify_dev_init+0x68/0x35c\nufshcd_probe_hba+0x12c/0x1cb8\nufshcd_host_reset_and_restore+0x88/0x254\nufshcd_reset_and_restore+0xd0/0x354\nufshcd_err_handler+0x408/0xc58\nprocess_one_work+0x24c/0x66c\nworker_thread+0x3e8/0xa4c\nkthread+0x150/0x1b4\nret_from_fork+0x10/0x30\nFix this lockup by making ufshcd_exec_dev_cmd() allocate a reserved\nrequest."], "name": "CVE-2021-47622", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Out of support scope", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise Linux 9"}], "public_date": "2024-07-16T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2021-47622\nhttps://nvd.nist.gov/vuln/detail/CVE-2021-47622\nhttps://lore.kernel.org/linux-cve-announce/2024071643-CVE-2021-47622-2e8d@gregkh/T"], "threat_severity": "Low"}

{}