CVE-2025-68168

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().

Is your site exposed to CVE-2025-68168?

Run a free security scan — no signup, results in seconds.

References

Other 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 https://git.kernel.org/stable/c/cbf2f527ae4ca7c7dabce42e85e8deb58588a37e https://git.kernel.org/stable/c/d2dd7ca05a11685c314e62802a55e8d67a90e974 https://git.kernel.org/stable/c/d6af7fce2e162ac68e85d3a11eb6ac8c35b24b64

Frequently Asked Questions

What is 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().

How do I check if I'm vulnerable to CVE-2025-68168? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

CVE-2025-68168

Description

References

Other References

Frequently Asked Questions

Don't wait for an exploit