cve-2021-47622
Vulnerability from cvelistv5
Published
2024-07-16 11:29
Modified
2024-11-04 12:09
Severity ?
Summary
scsi: ufs: Fix a deadlock in the error handler
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724Mailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7bMailing List, Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724Mailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7bMailing List, Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768Mailing List, Patch
Impacted products
Vendor Product Version
Linux Linux
Show details on NVD website

To clipboard 

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        "metrics": [
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              "content": {
                "id": "CVE-2021-47622",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
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                "role": "CISA Coordinator",
                "timestamp": "2024-09-10T17:00:01.684837Z",
                "version": "2.0.3"
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    "cna": {
      "affected": [
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          "product": "Linux",
          "programFiles": [
            "drivers/scsi/ufs/ufshcd.c",
            "drivers/scsi/ufs/ufshcd.h"
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          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
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      "descriptions": [
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          "lang": "en",
          "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."
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    "cveId": "CVE-2021-47622",
    "datePublished": "2024-07-16T11:29:38.339Z",
    "dateReserved": "2024-07-16T11:26:52.955Z",
    "dateUpdated": "2024-11-04T12:09:20.476Z",
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    "nvd": "{\"cve\":{\"id\":\"CVE-2021-47622\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2024-07-16T12:15:02.400\",\"lastModified\":\"2024-11-21T06:36:41.647\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"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.\"},{\"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.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-667\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionEndExcluding\":\"5.15.25\",\"matchCriteriaId\":\"0B2AC86E-F9F8-4303-B3D9-66D77F68DB32\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"5.16\",\"versionEndExcluding\":\"5.16.11\",\"matchCriteriaId\":\"0D327234-5D4A-43DC-A6DF-BCA0CEBEC039\"}]}]}],\"references\":[{\"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\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"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\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\"]}]}}"
  }
}


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