CVE-2024-50298

Kernel crash via uninitialized ENETC VF state

Published Nov 19, 2024 · Updated Sep 8, 2026

NULL pointer dereference in the Linux ENETC PF driver allows local users to crash Linux and Siemens controllers via a VF MAC change. The enetc_pf_set_vf_mac function dereferences pf->vf_state when ndo_set_vf_mac is invoked before that state has been allocated during VF enablement. Reaching the fault requires local low-privileged access that can issue VF network configuration against ENETC PF hardware; the resulting impact is a kernel crash and service interruption.

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 ENETC PF driver allows local users to crash Linux and Siemens controllers via a VF MAC change. The enetc_pf_set_vf_mac function dereferences pf->vf_state when ndo_set_vf_mac is invoked before that state has been allocated during VF enablement. Reaching the fault requires local low-privileged access that can issue VF network configuration against ENETC PF hardware; the resulting impact is a kernel crash and service interruption.

The record

CVE
CVE-2024-50298
Published
Nov 19, 2024
Updated
Sep 8, 2026
Vendor
Siemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Nov 19, 2024CVE 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=V3.1.5 <*
  2. 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=V3.1.5 <*; version=V3.1.6 <*
The Linux Kernel Organization · Linuxversion=5.1; version=d4fd0404c1c95b17880f254ebfee3485693fa8ba <35668e29e979b3a1927d3959cdd87327afd8e5eb; version=d4fd0404c1c95b17880f254ebfee3485693fa8ba <7eb923f8d4819737c07d6a8d0daef0a4d7f99e0c; version=d4fd0404c1c95b17880f254ebfee3485693fa8ba <e15c5506dd39885cd047f811a64240e2e8ab401b; version=d4fd0404c1c95b17880f254ebfee3485693fa8ba <ef0edfbe9eeed1fccad7cb705648af5222664944
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPversion=V3.1.5 <*; version=V3.1.6 <*
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.5 <*; version=V3.1.6 <*

Published CVSS scores

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