CVE-2024-35900

Kernel warning via inconsistent netfilter hook registration

Published May 19, 2024 · Updated May 23, 2026

Improper input validation in affected Linux kernels allows local users to trigger a warning via a batched nftables configuration. nf_tables_commit disables existing hooks after a dormant-table flag change but misses a new basechain in the same transaction, leaving its hook already unregistered. Local nftables-administration permission is required; the public record shows a warning during cleanup but does not identify a crash or hang.

CVSS severity5.5
Medium
EPSS probability0.23%
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 affected Linux kernels allows local users to trigger a warning via a batched nftables configuration. nf_tables_commit disables existing hooks after a dormant-table flag change but misses a new basechain in the same transaction, leaving its hook already unregistered. Local nftables-administration permission is required; the public record shows a warning during cleanup but does not identify a crash or hang.

The record

CVE
CVE-2024-35900
Published
May 19, 2024
Updated
May 23, 2026
Vendor
Siemens
Product
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Classifications
CWE-1287, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 19, 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=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=179d9ba5559a756f4322583388b3213fe4e391b0 <420132bee3d0136b7fba253a597b098fe15493a7; version=179d9ba5559a756f4322583388b3213fe4e391b0 <745cf6a843896cdac8766c74379300ed73c78830; version=179d9ba5559a756f4322583388b3213fe4e391b0 <8ba81dca416adf82fc5a2a23abc1a8cc02ad32fb; version=179d9ba5559a756f4322583388b3213fe4e391b0 <994209ddf4f430946f6247616b2e33d179243769; version=179d9ba5559a756f4322583388b3213fe4e391b0 <e95bb4cba94c018be24b11f017d1c55dd6cda31a; version=5.10.202 <5.10.215; version=5.13; version=5.4.262 <5.4.274; version=bf8083bbf8fa202e6e5316bbd99759ab82bfe7a3 <6d12f21f8bbe23fde25b77c2bf5973c136b8bef8; version=d9c4da8cb74e8ee6e58a064a3573aa37acf6c935 <7b6fba6918714afee3e17796113ccab636255c7b; version=e10f661adc556c4969c70ddaddf238bffdaf1e87 <41bad13c0e8a5a2b47a7472cced922555372daab

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-1287Improper Validation of Specified Type of Input
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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