CVE-2024-38625

System crash via unchecked bmap folio

Published Jun 21, 2024 · Updated May 11, 2026

NULL pointer dereference in the Linux kernel NTFS3 driver allows local users to crash the system by invoking bmap on a resident file. In ntfs_get_block_vbo, resident-file handling passes the absent folio to attr_data_read_resident and dereferences folio->page without a NULL check. Local access to an NTFS3-mounted resident file and the block-mapping path is required; the documented consequence is loss of system availability.

CVSS severity5.5
Medium
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

NULL pointer dereference in the Linux kernel NTFS3 driver allows local users to crash the system by invoking bmap on a resident file. In ntfs_get_block_vbo, resident-file handling passes the absent folio to attr_data_read_resident and dereferences folio->page without a NULL check. Local access to an NTFS3-mounted resident file and the block-mapping path is required; the documented consequence is loss of system availability.

The record

CVE
CVE-2024-38625
Published
Jun 21, 2024
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-476, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 21, 2024CVE publishedPublication date reported by the CVE source.
  2. May 11, 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=5.15
  2. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <1cd6c96219c429ebcfa8e79a865277376c563803
  3. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <6c8054d590668629bb2eb6fb4cbf22455d08ada8
  4. Affected versionversion=82cae269cfa953032fbb8980a7d554d60fb00b17 <ff1068929459347f9e47f8d14c409dcf938c2641

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.15; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <1cd6c96219c429ebcfa8e79a865277376c563803; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <6c8054d590668629bb2eb6fb4cbf22455d08ada8; version=82cae269cfa953032fbb8980a7d554d60fb00b17 <ff1068929459347f9e47f8d14c409dcf938c2641

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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.

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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

CWE-476NULL Pointer Dereference
T1499.004Application 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

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Your stack

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