CVE-2024-39470

Kernel fault via null eventfs inode use

Published Jun 25, 2024 · Updated May 23, 2026

Null-pointer dereference in Linux eventfs allows attackers to trigger a kernel fault while event inode attributes are updated. eventfs_find_events() sets ei to NULL after observing ei->is_freed, then continues into update_events_attr(), which accesses members through that null pointer. Published material does not identify a reliable trigger or required privilege, and the documented consequence is bounded to a possible kernel fault rather than code execution or data access.

CVSS severityUnavailable
Unscored
EPSS probability0.21%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Null-pointer dereference in Linux eventfs allows attackers to trigger a kernel fault while event inode attributes are updated. eventfs_find_events() sets ei to NULL after observing ei->is_freed, then continues into update_events_attr(), which accesses members through that null pointer. Published material does not identify a reliable trigger or required privilege, and the documented consequence is bounded to a possible kernel fault rather than code execution or data access.

The record

CVE
CVE-2024-39470
Published
Jun 25, 2024
Updated
May 23, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 25, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=628adb842bd5e1c2c598534a7a022b8235289de6 <5ade5fbdbbb1f023bb70730ba4d74146c8bc7eb9
  2. Affected versionversion=6.6.18 <6.6.34
  3. Affected versionversion=6.7.4 <6.8
  4. Affected versionversion=6.8
  5. Affected versionversion=8186fff7ab649085e2c60d032d9a20a85af1d87c <7a1b2d138189375ed1dcd7d0851118230221bd1d
  6. Affected versionversion=8186fff7ab649085e2c60d032d9a20a85af1d87c <d4e9a968738bf66d3bb852dd5588d4c7afd6d7f4
  7. Affected versionversion=9c2ac5e0ea7899411fd900d4681890722a020735

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=628adb842bd5e1c2c598534a7a022b8235289de6 <5ade5fbdbbb1f023bb70730ba4d74146c8bc7eb9; version=6.6.18 <6.6.34; version=6.7.4 <6.8; version=6.8; version=8186fff7ab649085e2c60d032d9a20a85af1d87c <7a1b2d138189375ed1dcd7d0851118230221bd1d; version=8186fff7ab649085e2c60d032d9a20a85af1d87c <d4e9a968738bf66d3bb852dd5588d4c7afd6d7f4; version=9c2ac5e0ea7899411fd900d4681890722a020735

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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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