CVE-2024-50040

Kernel panic via erroneous igb device restart

Published Oct 21, 2024 · Updated May 23, 2026

Denial of service in the Linux kernel igb driver allows local users to crash the system after a transient non-fatal PCIe error. igb_io_error_detected leaves the running device up, but igb_io_resume assumes it was brought down and calls igb_up, causing napi_enable to hit a kernel BUG. Reachability requires an affected kernel, an active igb interface, and PCIe error recovery; the documented consequence is an availability-only kernel panic.

CVSS severity5.5
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in the Linux kernel igb driver allows local users to crash the system after a transient non-fatal PCIe error. igb_io_error_detected leaves the running device up, but igb_io_resume assumes it was brought down and calls igb_up, causing napi_enable to hit a kernel BUG. Reachability requires an affected kernel, an active igb interface, and PCIe error recovery; the documented consequence is an availability-only kernel panic.

The record

CVE
CVE-2024-50040
Published
Oct 21, 2024
Updated
May 23, 2026
Vendor
Siemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Classifications
CWE-390, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 21, 2024CVE publishedPublication date reported by the CVE source.
  2. May 23, 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=V3.1.0 <V3.1.5

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Siemens · SIPLUS S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.0 <V3.1.5
Siemens · SCALANCE XC-300/XR-300/XC-400/XR-500WG/XR-500 familyversion=0 <V3.2
Siemens · SIMATIC S7-1500 TM MFP - GNU/Linux subsystemversion=0 <*
The Linux Kernel Organization · Linuxversion=004d25060c78fc31f66da0fa439c544dda1ac9d5 <330a699ecbfc9c26ec92c6310686da1230b4e7eb; version=004d25060c78fc31f66da0fa439c544dda1ac9d5 <500be93c5d53b7e2c5314292012185f0207bad0c; version=004d25060c78fc31f66da0fa439c544dda1ac9d5 <57c5053eaa5f9a8a99e34732e37a86615318e464; version=124e39a734cb90658b8f0dc110847bbfc6e33792 <dca2ca65a8695d9593e2cf1b40848e073ad75413; version=39695e87d86f0e7d897fba1d2559f825aa20caeb <6a39c8f5c8aae74c5ab2ba466791f59ffaab0178; version=4.14.322 <4.15; version=4.19.291 <4.19.323; version=41f63b72a01c0e0ac59ab83fd2d921fcce0f602d; version=5.10.188 <5.10.227; version=5.15.150 <5.15.168; version=5.4.251 <5.4.285; version=6.1.42 <6.1.113; version=6.4.7 <6.5; version=6.5; version=994c2ceb70ea99264ccc6f09e6703ca267dad63c <d79af3af2f49c6aae9add3d492c04d60c1b85ce4; version=c2312e1d12b1c3ee4100c173131b102e2aed4d04; version=c9f56f3c7bc908caa772112d3ae71cdd5d18c257 <c92cbd283ddcf55fd85a9a9b0ba13298213f3dd7; version=fa92c463eba75dcedbd8d689ffdcb83293aaa0c3 <0a94079e3841d00ea5abb05e3233d019a86745f6
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPversion=V3.1.0 <V3.1.5
Siemens · SCALANCE XCM/XRM/XCH/XRH-300 familyversion=0 <V3.2
Siemens · RUGGEDCOM RST2428Pversion=0 <V3.2
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.0 <V3.1.5

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.2Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:N/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-390Detection of Error Condition Without Action
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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