CVE-2024-41016

Kernel out-of-bounds read via unchecked xattr offset

Published Jul 29, 2024 · Updated Aug 5, 2026

Out-of-bounds access in Linux kernel OCFS2, including the Siemens GNU/Linux subsystem, allows local users to trigger an invalid memory read. ocfs2_xattr_find_entry() passed a forged xattr name offset and length to memcmp before verifying that the referenced bytes ended within xs->end. Reachability requires a mounted, deliberately modified OCFS2 image and an xattr lookup, with a kernel fault capable of interrupting the system.

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 access in Linux kernel OCFS2, including the Siemens GNU/Linux subsystem, allows local users to trigger an invalid memory read. ocfs2_xattr_find_entry() passed a forged xattr name offset and length to memcmp before verifying that the referenced bytes ended within xs->end. Reachability requires a mounted, deliberately modified OCFS2 image and an xattr lookup, with a kernel fault capable of interrupting the system.

The record

CVE
CVE-2024-41016
Published
Jul 29, 2024
Updated
Aug 5, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-119, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 29, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=2.6.28; version=cf1d6c763fbcb115263114302485ad17e7933d87 <57a3d89831fcaa2cdbe024b47c7c36d5a56c3637; version=cf1d6c763fbcb115263114302485ad17e7933d87 <af77c4fc1871847b528d58b7fdafb4aa1f6a9262; version=cf1d6c763fbcb115263114302485ad17e7933d87 <c031d286eceb82f72f8623b7f4abd2aa491bfb5e; version=cf1d6c763fbcb115263114302485ad17e7933d87 <c726dea9d0c806d64c26fcef483b1fb9474d8c5e; version=cf1d6c763fbcb115263114302485ad17e7933d87 <cfb926051fab19b10d1e65976211f364aa820180; version=cf1d6c763fbcb115263114302485ad17e7933d87 <e2b3d7a9d019d4d1a0da6c3ea64a1ff79c99c090; version=cf1d6c763fbcb115263114302485ad17e7933d87 <e4ffea01adf3323c821b6f37e9577d2d400adbaa; version=cf1d6c763fbcb115263114302485ad17e7933d87 <e8f9c4af7af7e9e4cd09c0251c7936593147419f

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:H/A:N

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-119Improper Restriction of Operations within the Bounds of a Memory Buffer
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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