CVE-2025-68349Network attack vector

Remote client crash via stale layoutcommit flag

Published Dec 24, 2025 · Updated Dec 24, 2025

NULL pointer dereference in affected Linux 4.10 and later kernels allows remote attackers controlling a pNFS server to crash an NFS client. pnfs_mark_layout_stateid_invalid leaves NFS_INO_LAYOUTCOMMIT set after invalidating the last layout segment, so writeback traverses a NULL layout. Exploitation requires a mounted NFSv4.1-or-later pNFS share served by an attacker-controlled or compromised server; the resulting oops or panic interrupts the client system.

CVSS severity7.5
High
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

NULL pointer dereference in affected Linux 4.10 and later kernels allows remote attackers controlling a pNFS server to crash an NFS client. pnfs_mark_layout_stateid_invalid leaves NFS_INO_LAYOUTCOMMIT set after invalidating the last layout segment, so writeback traverses a NULL layout. Exploitation requires a mounted NFSv4.1-or-later pNFS share served by an attacker-controlled or compromised server; the resulting oops or panic interrupts the client system.

The record

CVE
CVE-2025-68349
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 24, 2025CVE publishedPublication date reported by the CVE source.
  2. Dec 24, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.10
  2. Affected versionversion=fe1cf9469d7bcb6af27e42eb555a41b0135bce4a <38694f9aae00459ab443a7dc8b3949a6b33b560a
  3. Affected versionversion=fe1cf9469d7bcb6af27e42eb555a41b0135bce4a <59947dff0fb7c19c09ce6dccbcd253fd542b6c25
  4. Affected versionversion=fe1cf9469d7bcb6af27e42eb555a41b0135bce4a <ca2e7fdad7c683b64821c94a58b9b68733214dad
  5. Affected versionversion=fe1cf9469d7bcb6af27e42eb555a41b0135bce4a <e0f8058f2cb56de0b7572f51cd563ca5debce746

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.10; version=fe1cf9469d7bcb6af27e42eb555a41b0135bce4a <38694f9aae00459ab443a7dc8b3949a6b33b560a; version=fe1cf9469d7bcb6af27e42eb555a41b0135bce4a <59947dff0fb7c19c09ce6dccbcd253fd542b6c25; version=fe1cf9469d7bcb6af27e42eb555a41b0135bce4a <ca2e7fdad7c683b64821c94a58b9b68733214dad; version=fe1cf9469d7bcb6af27e42eb555a41b0135bce4a <e0f8058f2cb56de0b7572f51cd563ca5debce746

Published CVSS scores

7.5LinuxCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo