CVE-2025-68168

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().

CVSS 3.1

7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS

0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-25)

Published

2025-12-16

Modified

2026-10-14

Record from

the NVD, synced 2026-10-19

References

• https://git.kernel.org/stable/c/038861414ab383b41dd35abbf9ff0ef715592d53
• https://git.kernel.org/stable/c/2a9575a372182ca075070b3cd77490dcf0c951e7
• https://git.kernel.org/stable/c/300b072df72694ea330c4c673c035253e07827b8
• https://git.kernel.org/stable/c/8cae9cf23e0bd424ac904e753639a587543ce03a
• https://git.kernel.org/stable/c/a2aa97cde9857f881920635a2e3d3b11769619c5

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