CVE-2025-68364Public exploit

Kernel crash via mismatched OCFS2 extent flags

Published Dec 24, 2025 · Updated Dec 24, 2025

Denial of service in Linux since 3.0 allows local users to crash the kernel through corrupted OCFS2 extent metadata. __ocfs2_move_extent() calls BUG_ON when requested extent flags differ from stored record flags, turning filesystem inconsistency into a kernel panic. Triggering the crash requires local access to an OCFS2 filesystem and an extent-move operation that reaches mismatched metadata, causing a host-wide service interruption.

CVSS severity0.0
None
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Linux since 3.0 allows local users to crash the kernel through corrupted OCFS2 extent metadata. __ocfs2_move_extent() calls BUG_ON when requested extent flags differ from stored record flags, turning filesystem inconsistency into a kernel panic. Triggering the crash requires local access to an OCFS2 filesystem and an extent-move operation that reaches mismatched metadata, causing a host-wide service interruption.

The record

CVE
CVE-2025-68364
Published
Dec 24, 2025
Updated
Dec 24, 2025
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

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

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Is a vulnerable build present?

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

  1. Affected versionversion=3.0
  2. Affected versionversion=8f603e567aa7a243e68ca48b4f105b990851360f <7abbe41d22a06aae00fd46d29f59dd40a01e988f
  3. Affected versionversion=8f603e567aa7a243e68ca48b4f105b990851360f <8a7d58845fae061c62b50bc5eeb9bae4a1dedc3d
  4. Affected versionversion=8f603e567aa7a243e68ca48b4f105b990851360f <e5c2503696ec2e0dc7b2aee902dc859ccde39ddf
  5. Affected versionversion=8f603e567aa7a243e68ca48b4f105b990851360f <e5c52c320577cd405b251943ef77842dc6f303bf

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=3.0; version=8f603e567aa7a243e68ca48b4f105b990851360f <7abbe41d22a06aae00fd46d29f59dd40a01e988f; version=8f603e567aa7a243e68ca48b4f105b990851360f <8a7d58845fae061c62b50bc5eeb9bae4a1dedc3d; version=8f603e567aa7a243e68ca48b4f105b990851360f <e5c2503696ec2e0dc7b2aee902dc859ccde39ddf; version=8f603e567aa7a243e68ca48b4f105b990851360f <e5c52c320577cd405b251943ef77842dc6f303bf

Published CVSS scores

0.0Oracle LinuxCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:N

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.

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No observations available

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

Weakness, pattern, technique

T1499Endpoint Denial of Service

Public exploit references

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

Technologies

Your stack

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Your stack

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