CVE-2024-57924

Local denial of service via file-handle assertion

Published Jan 19, 2025 · Updated Sep 8, 2026

Reachable assertions in Linux kernel file-handle encoding allow local users to interrupt service through a failed encode_fh operation. Several exportfs_encode_fh and exportfs_encode_fid callers apply WARN_ON when a filesystem encode_fh method returns an ordinary failure instead of propagating that failure. The reachable paths require local low-privileged access and a filesystem condition that makes encoding fail; triggering the assertion causes kernel availability loss.

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

Reachable assertions in Linux kernel file-handle encoding allow local users to interrupt service through a failed encode_fh operation. Several exportfs_encode_fh and exportfs_encode_fid callers apply WARN_ON when a filesystem encode_fh method returns an ordinary failure instead of propagating that failure. The reachable paths require local low-privileged access and a filesystem condition that makes encoding fail; triggering the assertion causes kernel availability loss.

The record

CVE
CVE-2024-57924
Published
Jan 19, 2025
Updated
Sep 8, 2026
Vendor
Siemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Classifications
CWE-617, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 19, 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=V3.1.5 <*
  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=3.8; version=be77196b809cdce8603a5aadd5e3cfabd3cbef96 <73697928c806fe4689939722184a86fc1c1957b4; version=be77196b809cdce8603a5aadd5e3cfabd3cbef96 <974e3fe0ac61de85015bbe5a4990cf4127b304b2; version=be77196b809cdce8603a5aadd5e3cfabd3cbef96 <adcde2872f8fc399b249758ae1990dcd53b694ea; version=be77196b809cdce8603a5aadd5e3cfabd3cbef96 <f47c834a9131ae64bee3c462f4e610c67b0a000f
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPversion=V3.1.5 <*; version=V3.1.6 <*
Siemens · SIMATIC CN 4100version=0 <V5.0
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.5 <*; version=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
5.5Amazon LinuxCVSS: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-617Reachable Assertion
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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