In the Linux kernel, the following vulnerability has been resolved: jfs: fix uninitialized waitqueue in transaction manager The transaction manager initialization in txInit() was not properly initializing TxBlock[0].waitor waitqueue, causing a crash when txEnd(0) is called on read-only filesystems. When a filesystem is mounted read-only, txBegin() returns tid=0 to indicate no transaction. However, txEnd(0) still gets called and tries to access TxBlock[0].waitor via tid_to_tblock(0), but this waitqueue was never initialized because the initialization loop started at index 1 instead of 0. This causes a 'non-static key' lockdep warning and system crash: INFO: trying to register non-static key in txEnd Fix by ensuring all transaction blocks including TxBlock[0] have their waitqueues properly initialized during txInit().

Metrics

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.

The EPSS score is 0.00024.

Key SSVC decision points have not yet been added.

Affected Vendors & Products

Vendors Products
Linux
  • Linux Kernel

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References
Link Providers
https://git.kernel.org/stable/c/038861414ab383b41dd35abbf9ff0ef715592d53 cve-icon cve-icon
https://git.kernel.org/stable/c/2a9575a372182ca075070b3cd77490dcf0c951e7 cve-icon cve-icon
https://git.kernel.org/stable/c/300b072df72694ea330c4c673c035253e07827b8 cve-icon cve-icon
https://git.kernel.org/stable/c/8cae9cf23e0bd424ac904e753639a587543ce03a cve-icon cve-icon
https://git.kernel.org/stable/c/a2aa97cde9857f881920635a2e3d3b11769619c5 cve-icon cve-icon
https://git.kernel.org/stable/c/cbf2f527ae4ca7c7dabce42e85e8deb58588a37e cve-icon cve-icon
https://git.kernel.org/stable/c/d2dd7ca05a11685c314e62802a55e8d67a90e974 cve-icon cve-icon
https://git.kernel.org/stable/c/d6af7fce2e162ac68e85d3a11eb6ac8c35b24b64 cve-icon cve-icon
https://lore.kernel.org/linux-cve-announce/2025121627-CVE-2025-68168-7341@gregkh/T cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2025-68168 cve-icon
https://www.cve.org/CVERecord?id=CVE-2025-68168 cve-icon
History

Wed, 17 Dec 2025 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

threat_severity

Low

Tue, 16 Dec 2025 14:00:00 +0000

Type Values Removed Values Added
Description In the Linux kernel, the following vulnerability has been resolved: jfs: fix uninitialized waitqueue in transaction manager The transaction manager initialization in txInit() was not properly initializing TxBlock[0].waitor waitqueue, causing a crash when txEnd(0) is called on read-only filesystems. When a filesystem is mounted read-only, txBegin() returns tid=0 to indicate no transaction. However, txEnd(0) still gets called and tries to access TxBlock[0].waitor via tid_to_tblock(0), but this waitqueue was never initialized because the initialization loop started at index 1 instead of 0. This causes a 'non-static key' lockdep warning and system crash: INFO: trying to register non-static key in txEnd Fix by ensuring all transaction blocks including TxBlock[0] have their waitqueues properly initialized during txInit().
Title jfs: fix uninitialized waitqueue in transaction manager
First Time appeared Linux
Linux linux Kernel
CPEs cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Vendors & Products Linux
Linux linux Kernel
References
cve-icon MITRE

Status: PUBLISHED

Assigner: Linux

Published:

Updated: 2025-12-16T13:42:48.350Z

Reserved: 2025-12-16T13:41:40.250Z

Link: CVE-2025-68168

cve-icon Vulnrichment

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cve-icon NVD

Status : Received

Published: 2025-12-16T14:15:48.647

Modified: 2025-12-16T14:15:48.647

Link: CVE-2025-68168

cve-icon Redhat

Severity : Low

Publid Date: 2025-12-16T00:00:00Z

Links: CVE-2025-68168 - Bugzilla

cve-icon OpenCVE Enrichment

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