CVE-2024-37078

Kernel crash or hang via unsynchronized nilfs2 writeback

Published Jun 25, 2024 · Updated Aug 5, 2026

Race condition in the Linux nilfs2 filesystem allows local users to crash or hang the kernel through destructive block-device writes. The log writer starts writeback for segment-summary or super-root pages without waiting for existing backing-device page-cache writeback, leaving the writeback state inconsistent. Exploitation requires local write access to the block device underlying a mounted nilfs2 filesystem and can trigger a kernel BUG or stalled writeback.

CVSS severity7.8
High
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Race condition in the Linux nilfs2 filesystem allows local users to crash or hang the kernel through destructive block-device writes. The log writer starts writeback for segment-summary or super-root pages without waiting for existing backing-device page-cache writeback, leaving the writeback state inconsistent. Exploitation requires local write access to the block device underlying a mounted nilfs2 filesystem and can trigger a kernel BUG or stalled writeback.

The record

CVE
CVE-2024-37078
Published
Jun 25, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record 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=2.6.30
  2. Affected versionversion=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <0ecfe3a92869a59668d27228dabbd7965e83567f
  3. Affected versionversion=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <1f3bff69f1214fe03a02bc650d5bbfaa6e65ae7d
  4. Affected versionversion=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <271dcd977ccda8c7a26e360425ae7b4db7d2ecc0
  5. Affected versionversion=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <33900d7eae616647e179eee1c66ebe654ee39627
  6. Affected versionversion=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <614d397be0cf43412b3f94a0f6460eddced8ce92
  7. Affected versionversion=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <95f6f81e50d858a7c9aa7c795ec14a0ac3819118
  8. Affected versionversion=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <a4ca369ca221bb7e06c725792ac107f0e48e82e7
  9. Affected versionversion=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <a75b8f493dfc48aa38c518430bd9e03b53bffebe

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.30; version=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <0ecfe3a92869a59668d27228dabbd7965e83567f; version=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <1f3bff69f1214fe03a02bc650d5bbfaa6e65ae7d; version=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <271dcd977ccda8c7a26e360425ae7b4db7d2ecc0; version=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <33900d7eae616647e179eee1c66ebe654ee39627; version=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <614d397be0cf43412b3f94a0f6460eddced8ce92; version=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <95f6f81e50d858a7c9aa7c795ec14a0ac3819118; version=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <a4ca369ca221bb7e06c725792ac107f0e48e82e7; version=9ff05123e3bfbb1d2b68ba1d9bf1f7d1dffc1453 <a75b8f493dfc48aa38c518430bd9e03b53bffebe

Published CVSS scores

3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
7.1National Vulnerability DatabaseCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H
7.8Linux Kernel CNACVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

T1499Endpoint Denial of Service

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

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Your stack

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