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Back to active CVEs
High · CVSS 7.8CVE-2023-35001

Linux Kernel nftables Out-Of-Bounds Read/Write VulnerabilityCVE-2023-35001

Answer in brief

CVE-2023-35001 records a High severity (CVSS 7.8) vulnerability in Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability. The current sources do not mark it as known exploited. The current feed maps Linux/Linux Kernel (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Jul 5, 2023Updated Oct 14, 2026Source checked Oct 15, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.8
Exploitation
Not marked as known exploited
Affected software
5 mapped packages or products
Fix availability
Available

Why this deserves its current priority

CVSS is 7.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Linux/Linux Kernel (generic), Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
Linux/Linux Kernelgenericv3.13-rc1Not reported
Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5
Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5
Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric>=0 <V1.1V1.1
Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFPgeneric>=V3.1.0 <V3.1.5V3.1.5

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for Linux/Linux Kernel, Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP, Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP.
  2. 2Review the reported fix. Update Siemens/SIMATIC S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5; Siemens/SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP to V3.1.5; Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1; Siemens/SIPLUS S7-1500 CPU 1518-4 PN/DP MFP to V3.1.5 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Jul 5, 2023

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Oct 14, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Oct 14, 2026

Sources and claim methodology

  • Source referencepacketstormsecurity.com
  • Source referencepacketstormsecurity.com
  • Source referencecert-portal.siemens.com
  • Source referencecert-portal.siemens.com
  • Source referencecert-portal.siemens.com
  • Source referencecert-portal.siemens.com
  • Source referencecert-portal.siemens.com
  • Source referencelists.debian.org
  • Source referencelists.debian.org
  • Source referencelists.fedoraproject.org
  • Source referencelists.fedoraproject.org
  • Source referencelore.kernel.org
  • Source referencesecurity.netapp.com
  • Source referencedebian.org
  • Source referenceopenwall.com
  • Source referenceopenwall.com
Upstream source description

Linux Kernel nftables Out-Of-Bounds Read/Write Vulnerability; nft_byteorder poorly handled vm register contents when CAP_NET_ADMIN is in any user or network namespace

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • FreeRDP 3.3.0 before 3.32.0 Heap Out-of-Bounds Write via Grayscale JPEG Clipboard DataAlso CWE-787
  • SODOLA SL902-SWTGW124AS Buffer Overflow DoS via Multipart Boundary ParserSame generic ecosystem
  • sgl-project SGLang generate Endpoint io_struct.py denial of serviceSame generic ecosystem
  • sgl-project SGLang Session Cleanup session_controller.py Session.create_req denial of serviceSame generic ecosystem
  • ggml-org whisper.cpp Model Loader whisper_model_load out-of-boundsSame generic ecosystem
  • FreeRDP 3.13.0 before 3.32.0 Resource Leak via Drive Redirection IRP_MJ_CREATESame generic ecosystem

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787
Source
CVE List V5
Source checked
Oct 15, 2026
References
16 linked sources
Open source record