CVE-2024-42292

System crash via miscalculated uevent memory move

Published Aug 17, 2024 · Updated May 12, 2026

Out-of-bounds memory access in the Linux kernel allows local users to crash the system through a crafted uevent environment. The zap_modalias_env() helper miscalculates the memmove length when removing MODALIAS from a nonfinal position in its environment array, causing access past the allocated buffer. A local account must be able to trigger the affected uevent path; the published vendor impact is limited to loss of availability.

CVSS severity5.5
Medium
EPSS probability0.25%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds memory access in the Linux kernel allows local users to crash the system through a crafted uevent environment. The zap_modalias_env() helper miscalculates the memmove length when removing MODALIAS from a nonfinal position in its environment array, causing access past the allocated buffer. A local account must be able to trigger the affected uevent path; the published vendor impact is limited to loss of availability.

The record

CVE
CVE-2024-42292
Published
Aug 17, 2024
Updated
May 12, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-119, CWE-125, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 17, 2024CVE publishedPublication date reported by the CVE source.
  2. May 12, 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=0 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=4.15; version=9b3fa47d4a76b1d606a396455f9bbeee083ef008 <57fe01d3d04276875c7e3a6dc763517fc05b8762; version=9b3fa47d4a76b1d606a396455f9bbeee083ef008 <648d5490460d38436640da0812bf7f6351c150d2; version=9b3fa47d4a76b1d606a396455f9bbeee083ef008 <68d63ace80b76395e7935687ecdb86421adc2168; version=9b3fa47d4a76b1d606a396455f9bbeee083ef008 <81a15d28f32af01493ae8c5457e0d55314a4167d; version=9b3fa47d4a76b1d606a396455f9bbeee083ef008 <b59a5e86a3934f1b6a5bd1368902dbc79bdecc90; version=9b3fa47d4a76b1d606a396455f9bbeee083ef008 <c5ee8adc8d98a49703320d13878ba2b923b142f5; version=9b3fa47d4a76b1d606a396455f9bbeee083ef008 <d4663536754defff75ff1eca0aaebc41da165a8d; version=9b3fa47d4a76b1d606a396455f9bbeee083ef008 <dd6e9894b451e7c85cceb8e9dc5432679a70e7dc

Published CVSS scores

5.5Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-125Out-of-bounds Read
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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