CVE-2025-38280

Kernel service interruption via failed BPF JIT validation

Published Jul 10, 2025 · Updated Jul 14, 2026

Improper validation in the BPF JIT of Linux and affected Siemens controllers allows local users to interrupt service after JIT failure. kernel/bpf/core.c leaves a program marked as JIT-requested when compilation fails, so execution reaches __bpf_prog_ret0_warn and triggers WARN_ON_ONCE. The path requires CONFIG_BPF_JIT_ALWAYS_ON to be unset, bpf_jit_enable to equal 1, and a failed JIT attempt; interruption depends on warning-handling policy.

CVSS severity7.8
High
EPSS probability0.19%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper validation in the BPF JIT of Linux and affected Siemens controllers allows local users to interrupt service after JIT failure. kernel/bpf/core.c leaves a program marked as JIT-requested when compilation fails, so execution reaches __bpf_prog_ret0_warn and triggers WARN_ON_ONCE. The path requires CONFIG_BPF_JIT_ALWAYS_ON to be unset, bpf_jit_enable to equal 1, and a failed JIT attempt; interruption depends on warning-handling policy.

The record

CVE
CVE-2025-38280
Published
Jul 10, 2025
Updated
Jul 14, 2026
Vendor
Siemens
Product
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP
Classifications
CWE-20, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Jul 14, 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 <*

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 <*
The Linux Kernel Organization · Linuxversion=234646dcfc5f531c74ab20595e89eacd62e3611f; version=4.14.140 <4.15; version=4.16; version=4.9.190 <4.10; version=5124abda3060e2eab506fb14a27acadee3c3e396; version=fa9dd599b4dae841924b022768354cfde9affecb <0b9bb52796b239de6792d0d68cdc6eb505ebff96; version=fa9dd599b4dae841924b022768354cfde9affecb <2bc6dffb4b72d53d6a6ada510269bf548c3f7ae0; version=fa9dd599b4dae841924b022768354cfde9affecb <6f639c25bfad17d9fd7379ab91ff9678ea9aac85; version=fa9dd599b4dae841924b022768354cfde9affecb <86bc9c742426a16b52a10ef61f5b721aecca2344; version=fa9dd599b4dae841924b022768354cfde9affecb <e7fb4ebee6e900899d2b2e5852c3e2eafcbcad66; version=fa9dd599b4dae841924b022768354cfde9affecb <ef92b96530d1731d9ac167bc7c193c683cd78fff
Siemens · SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPversion=V3.1.5 <*
Siemens · SIMATIC S7-1500 CPU 1518-4 PN/DP MFPversion=V3.1.5 <*

Published CVSS scores

7.8Siemens ProductCERTCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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