{"id":"CVE-2025-68168","title":"In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix uninitialized waitqueue in transaction manager\n\nThe transaction manager initialization in txInit() was not properly\ninitializing TxBlock[0].waitor waitqueue, c…","summary":"In the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix uninitialized waitqueue in transaction manager\n\nThe transaction manager initialization in txInit() was not properly\ninitializing TxBlock[0].waitor waitqueue, c…","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","published":"2025-12-16","updated":"2026-10-14","sourceUpdated":"2026-10-14T13:10:00.187","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-68168","references":[{"url":"https://git.kernel.org/stable/c/038861414ab383b41dd35abbf9ff0ef715592d53","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/2a9575a372182ca075070b3cd77490dcf0c951e7","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/300b072df72694ea330c4c673c035253e07827b8","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/8cae9cf23e0bd424ac904e753639a587543ce03a","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/a2aa97cde9857f881920635a2e3d3b11769619c5","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/cbf2f527ae4ca7c7dabce42e85e8deb58588a37e","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d2dd7ca05a11685c314e62802a55e8d67a90e974","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"},{"url":"https://git.kernel.org/stable/c/d6af7fce2e162ac68e85d3a11eb6ac8c35b24b64","label":"416baaa9-dc9f-4396-8d5f-8c081fb06d67"}],"tags":["nvd"],"epss":0.00155,"epssPercentile":0.04122,"ingestedAt":"2026-10-14T13:30:58.442Z","slug":"CVE-2025-68168","body":"## Overview\n\nIn the Linux kernel, the following vulnerability has been resolved:\n\njfs: fix uninitialized waitqueue in transaction manager\n\nThe transaction manager initialization in txInit() was not properly\ninitializing TxBlock[0].waitor waitqueue, causing a crash when\ntxEnd(0) is called on read-only filesystems.\n\nWhen a filesystem is mounted read-only, txBegin() returns tid=0 to\nindicate no transaction. However, txEnd(0) still gets called and\ntries to access TxBlock[0].waitor via tid_to_tblock(0), but this\nwaitqueue was never initialized because the initialization loop\nstarted at index 1 instead of 0.\n\nThis causes a 'non-static key' lockdep warning and system crash:\n  INFO: trying to register non-static key in txEnd\n\nFix by ensuring all transaction blocks including TxBlock[0] have\ntheir waitqueues properly initialized during txInit().\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}