CVE-2021-47382 - OpenCVE

In the Linux kernel, the following vulnerability has been resolved: s390/qeth: fix deadlock during failing recovery Commit 0b9902c1fcc5 ("s390/qeth: fix deadlock during recovery") removed taking discipline_mutex inside qeth_do_reset(), fixing potential deadlocks. An error path was missed though, that still takes discipline_mutex and thus has the original deadlock potential. Intermittent deadlocks were seen when a qeth channel path is configured offline, causing a race between qeth_do_reset and ccwgroup_remove. Call qeth_set_offline() directly in the qeth_do_reset() error case and then a new variant of ccwgroup_set_offline(), without taking discipline_mutex.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

No data.

No data.

No data.

References

Link	Providers
https://git.kernel.org/stable/c/0bfe741741327822d1482c7edef0184636d08b40
https://git.kernel.org/stable/c/d2b59bd4b06d84a4eadb520b0f71c62fe8ec0a62
https://lore.kernel.org/linux-cve-announce/2024052143-CVE-2021-47382-87ee@gregkh/T
https://nvd.nist.gov/vuln/detail/CVE-2021-47382
https://www.cve.org/CVERecord?id=CVE-2021-47382

History

No history.

MITRE

Status: PUBLISHED

Assigner: Linux

Published: 2024-05-21T15:03:43.621Z

Updated: 2024-11-04T12:04:49.284Z

Reserved: 2024-05-21T14:58:30.812Z

Link: CVE-2021-47382

Vulnrichment

Updated: 2024-08-04T05:32:08.576Z

NVD

Status : Awaiting Analysis

Published: 2024-05-21T15:15:23.803

Modified: 2024-05-21T16:54:26.047

Link: CVE-2021-47382

Redhat

Severity : Low

Publid Date: 2024-05-21T00:00:00Z

Links: CVE-2021-47382 - Bugzilla

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