CVE-2024-58016

Local service interruption via oversized SafeSetID policy write

Published Feb 27, 2025 · Updated Sep 8, 2026

Improper input validation in Linux SafeSetID allows local users to interrupt service by writing an oversized policy to securityfs. The handle_policy_update() path passed the supplied length to memdup_user_nul() before checking it against KMALLOC_MAX_SIZE, so a huge write reached kmalloc and triggered a kernel warning. Reaching either 0600 policy file requires CAP_MAC_ADMIN in the initial user namespace, and the reported consequence is availability loss rather than data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.20%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Linux SafeSetID allows local users to interrupt service by writing an oversized policy to securityfs. The handle_policy_update() path passed the supplied length to memdup_user_nul() before checking it against KMALLOC_MAX_SIZE, so a huge write reached kmalloc and triggered a kernel warning. Reaching either 0600 policy file requires CAP_MAC_ADMIN in the initial user namespace, and the reported consequence is availability loss rather than data disclosure or modification.

The record

CVE
CVE-2024-58016
Published
Feb 27, 2025
Updated
Sep 8, 2026
Vendor
Siemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Classifications
CWE-20, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 27, 2025CVE publishedPublication date reported by the CVE source.
  2. Sep 8, 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=V3.1.6 <*

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIPLUS S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.6 <*
Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=5.1; version=aeca4e2ca65c1aeacfbe520684e6421719d99417 <36b385d0f2b4c0bf41d491e19075ecd990d2bf94; version=aeca4e2ca65c1aeacfbe520684e6421719d99417 <96fae5bd1589731592d30b3953a90a77ef3928a6; version=aeca4e2ca65c1aeacfbe520684e6421719d99417 <976284b94f2021df09829e37a367e19b84d9e5f3; version=aeca4e2ca65c1aeacfbe520684e6421719d99417 <a0dec65f88c8d9290dfa1d2ca1e897abe54c5881; version=aeca4e2ca65c1aeacfbe520684e6421719d99417 <c71d35676d46090c891b6419f253fb92a1a9f4eb; version=aeca4e2ca65c1aeacfbe520684e6421719d99417 <ecf6a4a558097920447a6fb84dfdb279e2ac749a; version=aeca4e2ca65c1aeacfbe520684e6421719d99417 <f09ff307c7299392f1c88f763299e24bc99811c7
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPversion=V3.1.6 <*
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.6 <*

Published CVSS scores

5.5Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5SUSECVSS: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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
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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