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CVE-2021-47622 (GCVE-0-2021-47622)

Vulnerability from cvelistv5 – Published: 2024-07-16 11:29 – Updated: 2026-05-23 15:20
VLAI
Title
scsi: ufs: Fix a deadlock in the error handler
Summary
In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: Fix a deadlock in the error handler The following deadlock has been observed on a test setup: - All tags allocated - The SCSI error handler calls ufshcd_eh_host_reset_handler() - ufshcd_eh_host_reset_handler() queues work that calls ufshcd_err_handler() - ufshcd_err_handler() locks up as follows: Workqueue: ufs_eh_wq_0 ufshcd_err_handler.cfi_jt Call trace: __switch_to+0x298/0x5d8 __schedule+0x6cc/0xa94 schedule+0x12c/0x298 blk_mq_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 ufshcd_reset_and_restore+0xd0/0x354 ufshcd_err_handler+0x408/0xc58 process_one_work+0x24c/0x66c worker_thread+0x3e8/0xa4c kthread+0x150/0x1b4 ret_from_fork+0x10/0x30 Fix this lockup by making ufshcd_exec_dev_cmd() allocate a reserved request.
Severity
No CVSS data available.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-09-10 17:00 UTC
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 7252a3603015f1fd04363956f4b72a537c9f9c42 , < 493c9e850677df8b4eda150c2364b1c1a72ed724 (git)
Affected: 7252a3603015f1fd04363956f4b72a537c9f9c42 , < d69d98d8edf90e25e4e09930dd36dd6d09dd6768 (git)
Affected: 7252a3603015f1fd04363956f4b72a537c9f9c42 , < 945c3cca05d78351bba29fa65d93834cb7934c7b (git)
Affected: a8d2d45c70c7391386baf7863674f156da56a3d5 (git)
Affected: 5.4.112 , < 5.5 (semver)
guessed Create a notification for this product.
Linux Linux Affected: 5.6
Unaffected: 0 , < 5.6 (semver)
Unaffected: 5.15.25 , ≤ 5.15.* (semver)
Unaffected: 5.16.11 , ≤ 5.16.* (semver)
Unaffected: 5.17 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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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 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Coordinator\",\"version\":\"2.0.3\"}}]},\"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 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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2025-11-21T14:38:55+00:00",
      "cve": "CVE-2021-47622",
      "id": "CVE-2021-47622",
      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:known_affected": "136",
      "product_status:known_not_affected": "62",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: scsi: ufs: Fix a deadlock in the error handler",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2021/cve-2021-47622.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-13T23:55:14Z",
      "cve": "CVE-2021-47622",
      "id": "CVE-2021-47622",
      "initial_release_date": "2024-07-17T04:35:54Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "161",
      "product_status:recommended": "438",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2021-47622",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2021-47622.json",
      "version": "55"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-04T05:47:40.496Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-47622\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-09-10T17:00:01.684837Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-09-11T12:42:21.723Z\"}}], \"cna\": {\"title\": \"scsi: ufs: Fix a deadlock in the error handler\", \"affected\": [{\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"7252a3603015f1fd04363956f4b72a537c9f9c42\", \"lessThan\": \"493c9e850677df8b4eda150c2364b1c1a72ed724\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7252a3603015f1fd04363956f4b72a537c9f9c42\", \"lessThan\": \"d69d98d8edf90e25e4e09930dd36dd6d09dd6768\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"7252a3603015f1fd04363956f4b72a537c9f9c42\", \"lessThan\": \"945c3cca05d78351bba29fa65d93834cb7934c7b\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"a8d2d45c70c7391386baf7863674f156da56a3d5\", \"versionType\": \"git\"}, {\"status\": \"affected\", \"version\": \"5.4.112\", \"lessThan\": \"5.5\", \"versionType\": \"semver\"}], \"programFiles\": [\"drivers/scsi/ufs/ufshcd.c\", \"drivers/scsi/ufs/ufshcd.h\"], \"defaultStatus\": \"unaffected\"}, {\"repo\": \"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\", \"vendor\": \"Linux\", \"product\": \"Linux\", \"versions\": [{\"status\": \"affected\", \"version\": \"5.6\"}, {\"status\": \"unaffected\", \"version\": \"0\", \"lessThan\": \"5.6\", \"versionType\": \"semver\"}, {\"status\": \"unaffected\", \"version\": \"5.15.25\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.15.*\"}, {\"status\": \"unaffected\", \"version\": \"5.16.11\", \"versionType\": \"semver\", \"lessThanOrEqual\": \"5.16.*\"}, {\"status\": \"unaffected\", \"version\": \"5.17\", \"versionType\": \"original_commit_for_fix\", \"lessThanOrEqual\": \"*\"}], \"programFiles\": [\"drivers/scsi/ufs/ufshcd.c\", \"drivers/scsi/ufs/ufshcd.h\"], \"defaultStatus\": \"affected\"}], \"references\": [{\"url\": \"https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724\"}, {\"url\": \"https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768\"}, {\"url\": \"https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b\"}], \"x_generator\": {\"engine\": \"bippy-1.2.0\"}, \"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 - 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      "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\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.