Skip to content
Noroxi
NVD / CVE Program· CNA Linux

CVE-2025-68168: jfs: fix uninitialized waitqueue in transaction manager

Noroxi assessment

Priority: Monitor (action score 31/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 0.15% (FIRST EPSS).
  • Someone with local access to the system can trigger it. A low-privileged account is enough. No user action is required. No special conditions are required; it is repeatable.
  • Fixed version: Linux Linux 038861414ab383b41dd35abbf9ff0ef715592d53, 2a9575a372182ca075070b3cd77490dcf0c951e7, 300b072df72694ea330c4c673c035253e07827b8.

Low priority for now. Upgrade to Linux Linux 038861414ab383b41dd35abbf9ff0ef715592d53, 2a9575a372182ca075070b3cd77490dcf0c951e7, 300b072df72694ea330c4c673c035253e07827b8 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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().

HighCVSS 7.8 · v3.1—No exploit Fix available
Published
Dec 16, 2025
Updated
Oct 14, 2026
EPSS
0.1% · 4th percentile
CWE
—

Report tools

JSON

Action score

31

Monitor

Low priority for now.

CVSS
31 / 40 · 7.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.1%

CNA vs NVD score

NVD
—
CNA · Linux
7.8
NVD has not scored this yet; the score shown is the CNA’s.

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2025-68168

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

One daily email digest (06:00 UTC); connect a webhook for KEV listings and weaponized exploits instantly.

Your free account also gets you

Running WordPress? Scan your site free with WP Lens

  • Stack alerts: add the products and versions you run, get the new CVEs that affect them
  • Uptime monitoring: 1 site, instant email when it goes down
  • Add your domain: subdomains and takeover risk scanned every week (1 domain)
  • 10 scans an hour on the security tools (3 a day without an account), an API key and MCP
  • All your scans in one panel: findings, what changed in the last scan, a report per domain or per client (PDF, share link)
All free tools

Sign up with email · Have an account? Sign in

Free account, no card. Unfollow any time.

Don't want an account? Get "Exploited this week" by email every MondayDon't want an account? RSS feed for linux records

Running WordPress? Scan your site free with WP Lens

Is your version affected? Check it

Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

We use this product, ask for help

Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

—

Versions reported by the vendor

Affected version ranges reported by the assigning authority (Linux). Independent of NVD's CPE analysis and usually ahead of it.

  • Linux Linux

    • a88efca805bea93cea9187dfd00835aa7093bf1b, 97c1f26e4d4af55e8584e4646dd5c5fa7baf62c7, b0ed8ed0428ee96092da6fefa5cfacbe4abed701, 6.5affected
    • 2a8807f9f511c64de0c7cc9900a1683e3d72a3e5 and later · before d6af7fce2e162ac68e85d3a11eb6ac8c35b24b64affected · git
    • 5c094ca994824e038b6a97835ded4e5d1d808504 and later · before 8cae9cf23e0bd424ac904e753639a587543ce03aaffected · git
    • 2febd5f81e4bfba61d9f374dcca628aff374cc56 and later · before a2aa97cde9857f881920635a2e3d3b11769619c5affected · git
    • aa7cdf487ab3fa47284daaccc3d7d5de01c6a84c and later · before d2dd7ca05a11685c314e62802a55e8d67a90e974affected · git
    • 95e2b352c03b0a86c5717ba1d24ea20969abcacc and later · before 2a9575a372182ca075070b3cd77490dcf0c951e7affected · git
    • 95e2b352c03b0a86c5717ba1d24ea20969abcacc and later · before cbf2f527ae4ca7c7dabce42e85e8deb58588a37eaffected · git
    • 95e2b352c03b0a86c5717ba1d24ea20969abcacc and later · before 038861414ab383b41dd35abbf9ff0ef715592d53affected · git
    • 95e2b352c03b0a86c5717ba1d24ea20969abcacc and later · before 300b072df72694ea330c4c673c035253e07827b8affected · git
    • 5.4.255 and later · before 5.4.302affected · semver

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12linuxbefore 6.1.159-16.1.159-1
Debian:13linuxbefore 6.12.63-16.12.63-1
Debian:14linuxbefore 6.17.8-16.17.8-1

Same product

linux: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-74705udp: fix potential use-after-free in tunnel segmentation
    40Plan
  • CVE-2026-74612veth: fix skb length accounting after XDP frag adjustment
    40Plan
  • CVE-2026-74475vxlan: use neigh_ha_snapshot() in route_shortcircuit()
    40Plan

Published before and after this one in the same product

  • ← EarlierCVE-2025-40363Dec 16, 2025 · net: ipv6: fix field-spanning memcpy warning in AH output
    0Monitor
  • ← EarlierCVE-2025-68167Dec 16, 2025 · gpiolib: fix invalid pointer access in debugfs
    31Monitor
  • Later →CVE-2025-68169Dec 16, 2025 · netpoll: Fix deadlock in memory allocation under spinlock
    0Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
Linux Linux038861414ab383b41dd35abbf9ff0ef715592d53Vendor (CNA)
Linux Linux2a9575a372182ca075070b3cd77490dcf0c951e7Vendor (CNA)
Linux Linux300b072df72694ea330c4c673c035253e07827b8Vendor (CNA)
Linux Linux4.15Vendor (CNA)
Linux Linux4.20Vendor (CNA)
Linux Linux5.10.247Vendor (CNA)
Linux Linux5.15.197Vendor (CNA)
Linux Linux5.4.302Vendor (CNA)
Linux Linux6.1.159Vendor (CNA)
Linux Linux6.5Vendor (CNA)
Linux Linux8cae9cf23e0bd424ac904e753639a587543ce03aVendor (CNA)
Linux Linuxa2aa97cde9857f881920635a2e3d3b11769619c5Vendor (CNA)
Linux Linuxcbf2f527ae4ca7c7dabce42e85e8deb58588a37eVendor (CNA)
Linux Linuxd2dd7ca05a11685c314e62802a55e8d67a90e974Vendor (CNA)
Linux Linuxd6af7fce2e162ac68e85d3a11eb6ac8c35b24b64Vendor (CNA)
debian:linux6.1.159-1 · Debian:12Package registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

No history yet (it accumulates with the daily EPSS job).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Someone with local access to the system can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Local
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

—

CVSS vector

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

nvd-secondary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (7 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records