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CVE-2021-47622 Details

Description

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724	kernel.org	Mailing ListPatch
https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b	kernel.org	Mailing ListPatch
https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768	kernel.org	Mailing ListPatch
https://git.kernel.org/stable/c/493c9e850677df8b4eda150c2364b1c1a72ed724	CVE	Mailing ListPatch
https://git.kernel.org/stable/c/945c3cca05d78351bba29fa65d93834cb7934c7b	CVE	Mailing ListPatch
https://git.kernel.org/stable/c/d69d98d8edf90e25e4e09930dd36dd6d09dd6768	CVE	Mailing ListPatch

see all 6 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-667	Improper Locking	[email protected]

Affected Products

Product	Versions
linux linux kernel	< 5.15.25 >= 5.16, < 5.16.11
CPE cpe:2.3:o:linux:linux_kernel:::::::: Remediation No remediation found in references.

Change History

5 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	kernel.org
Jun 17, 2026	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
Aug 21, 2024	Initial Analysis	[email protected]
Jul 16, 2024	New CVE Received	kernel.org