CVE-2024-25740Public exploit

Local denial of service via leaked kobject name

Published Feb 12, 2024 · Updated May 7, 2025

Memory leak in the UBI driver in Linux kernel 6.7.4 and earlier allows local users to exhaust memory through UBI_IOCATT. During failed sysfs slab-cache creation in ubi_attach, sysfs_slab_add returns without dropping the initialized kobject reference, leaving kobj->name allocated. Repeated attach operations require local access to the UBI control device and can consume unreclaimable kernel memory until service is interrupted.

CVSS severity5.5
Medium
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

Memory leak in the UBI driver in Linux kernel 6.7.4 and earlier allows local users to exhaust memory through UBI_IOCATT. During failed sysfs slab-cache creation in ubi_attach, sysfs_slab_add returns without dropping the initialized kobject reference, leaving kobj->name allocated. Repeated attach operations require local access to the UBI control device and can consume unreclaimable kernel memory until service is interrupted.

The record

CVE
CVE-2024-25740
Published
Feb 12, 2024
Updated
May 7, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-401, T1499.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 12, 2024CVE publishedPublication date reported by the CVE source.
  2. May 7, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
T1499.001OS Exhaustion Flood

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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