HighFix available
jfs: fix uninitialized waitqueue in transaction manager
Type: advisorySources: OSV
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().
- Products
- Kernel
- Affected versions
- Not specified
- Fixed versions
- 5.10.247, 5.15.197, 5.4.302, 6.1.159, 6.12.58, 6.17.8, 6.6.117
- CVEs
- CVE-2025-68168
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 20:51 UTC · Revision 1
Source evidence
jfs: fix uninitialized waitqueue in transaction manager
core-osv · Original sourcePublished 16 Dec 2025, 13:42 UTC
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().
osv:CVE-2025-68168
Kernel
Fixed versions: 5.4.302, 5.10.247, 5.15.197, 6.1.159, 6.6.117, 6.12.58, 6.17.8
Complete source record
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