CVE-2024-38583

Kernel memory corruption via stale log-writer timer

Published Jun 19, 2024 · Updated Aug 5, 2026

Use-after-free in the nilfs2 log writer in affected Linux kernels allows local users to corrupt kernel memory during unmount. The sc_timer callback can call wake_up_process on a freed log-writer task because the timer remains armed beyond the thread's lifetime. Access to a mounted nilfs2 volume and its teardown is required; successful triggering can panic the host or corrupt scheduler state.

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

Use-after-free in the nilfs2 log writer in affected Linux kernels allows local users to corrupt kernel memory during unmount. The sc_timer callback can call wake_up_process on a freed log-writer task because the timer remains armed beyond the thread's lifetime. Access to a mounted nilfs2 volume and its teardown is required; successful triggering can panic the host or corrupt scheduler state.

The record

CVE
CVE-2024-38583
Published
Jun 19, 2024
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 19, 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

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=2.6.35
  2. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <2f12b2c03c5dae1a0de0a9e5853177e3d6eee3c6
  3. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <67fa90d4a2ccd9ebb0e1e168c7d0b5d0cf3c7148
  4. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <68e738be5c518fc3c4e9146b66f67c8fee0135fb
  5. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <822ae5a8eac30478578a75f7e064f0584931bf2d
  6. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <82933c84f188dcfe89eb26b0b48ab5d1ca99d164
  7. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <86a30d6302deddb9fb97ba6fc4b04d0e870b582a
  8. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <e65ccf3a4de4f0c763d94789615b83e11f204438
  9. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <f5d4e04634c9cf68bdf23de08ada0bb92e8befe7
  10. Affected versionversion=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <f9186bba4ea282b07293c1c892441df3a5441cb0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=2.6.35; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <2f12b2c03c5dae1a0de0a9e5853177e3d6eee3c6; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <67fa90d4a2ccd9ebb0e1e168c7d0b5d0cf3c7148; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <68e738be5c518fc3c4e9146b66f67c8fee0135fb; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <822ae5a8eac30478578a75f7e064f0584931bf2d; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <82933c84f188dcfe89eb26b0b48ab5d1ca99d164; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <86a30d6302deddb9fb97ba6fc4b04d0e870b582a; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <e65ccf3a4de4f0c763d94789615b83e11f204438; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <f5d4e04634c9cf68bdf23de08ada0bb92e8befe7; version=fdce895ea5dd4e24edf1f4d693827349a4e5b3b4 <f9186bba4ea282b07293c1c892441df3a5441cb0

Published CVSS scores

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

T1068Exploitation for Privilege Escalation

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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