Skip to main content
CVE-2025-68168VulnerabilityPublished Updated

CVE-2025-68168: Linux kernel · jfs: fix uninitialized waitqueue in transaction manager The transaction manager

Source GCVE Database

0

Not known to be exploited · CVSS 7.8 High.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score
7.8High
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.1% chance of exploitation in 30 days – higher than 4% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 16 Dec 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponised: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

What to do

AI-suggested

A fix is available that properly initializes the waitqueue for TxBlock[0] during transaction manager initialization. Users should apply the official Linux kernel patch that addresses this issue. Patch status is not explicitly confirmed in the provided data; therefore, check the vendor advisory for current remediation guidance.

Description

A vulnerability in the Linux kernel's JFS transaction manager was fixed by properly initializing the waitqueue for TxBlock[0]. The issue caused a system crash when txEnd(0) was called on read-only filesystems due to an uninitialized waitqueue. This led to a lockdep warning and crash. The fix ensures all transaction blocks, including TxBlock[0], have their waitqueues initialized during txInit().

References

Community reviews

Loading reviews…