Medium · CVSS 5.5CVE-2023-1095

CVE Program ContainerCVE-2023-1095

Answer in brief

CVE-2023-1095 records a Medium severity (CVSS 5.5) vulnerability in CVE Program Container. The current sources do not mark it as known exploited. The current feed maps n/a/Linux kernel netfilter subsystem. (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

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

Published Feb 28, 2023Updated Oct 14, 2026Source checked Oct 14, 2026First seen by HOL Oct 14, 2026Material review Oct 14, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.5
Exploitation: Not marked as known exploited
Affected software: 2 mapped packages or products
Fix availability: Available

Why this deserves its current priority

CVSS is 5.5. 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 n/a/Linux kernel netfilter subsystem. (generic), Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
n/a/Linux kernel netfilter subsystem.generic	Fixed in 6.0-rc1	Not reported
Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystemgeneric	>=0 <V1.1	V1.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for n/a/Linux kernel netfilter subsystem., Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem.
Review the reported fix. Update Siemens/SIMATIC S7-1500 TM MFP - GNU/Linux subsystem to V1.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Feb 28, 2023
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Oct 14, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Oct 14, 2026

Sources and claim methodology

Upstream source description

In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the transaction object. nft_trans_destroy() calls list_del(), but the transaction was never placed on a list -- the list head is all zeroes, this results in a NULL pointer dereference.

Quoted source text, attributed separately from HOL analysis.