medium 5.5

CVE-2023-1095 json

In nf_tables_updtable, if nf_tables_table_enable returns an error, nft_trans_destroy is called to free the transaction object.

published 2023-02-28 3 y ago modified 2026-10-14 25 d ago also EUVD-2023-23382

cvss: 5.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.2%; EPSS 0.2% chance of exploitation in 30 days, percentile 15%
public exploits: 0; none known

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.

Patch / fix

fixed in 1 distros 5 links 2

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem V1.1

debian ubuntu red hat suse azure linux

linux Debian 14, Debian 13, Debian 12 5.19.6-1

debian advisories DEBIAN-CVE-2023-1095

linux Ubuntu 18.04 LTS 4.15.0-197.208
linux Ubuntu 20.04 LTS 5.4.0-132.148
linux Ubuntu 22.04 LTS 5.15.0-53.59
linux-aws Ubuntu 18.04 LTS 4.15.0-1143.155
linux-aws Ubuntu 20.04 LTS 5.4.0-1089.97
linux-aws Ubuntu 22.04 LTS 5.15.0-1023.27
linux-gcp Ubuntu 20.04 LTS 5.4.0-1093.102
linux-gcp Ubuntu 22.04 LTS 5.15.0-1022.29

ubuntu advisories UBUNTU-CVE-2023-1095

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

kernel RHEL 9 5.14.0-162.6.1.el9_1
perf RHEL 9 5.14.0-162.6.1.el9_1
bpftool RHEL 9 5.14.0-162.6.1.el9_1
kernel-core RHEL 9 5.14.0-162.6.1.el9_1
kernel-tools RHEL 9 5.14.0-162.6.1.el9_1
python3-perf RHEL 9 5.14.0-162.6.1.el9_1
kernel-modules RHEL 9 5.14.0-162.6.1.el9_1
kernel-zfcpdump RHEL 9 5.14.0-162.6.1.el9_1

red hat advisories RHSA-2022:8267 RHSA-2022:7933 RHSA-2023:5627 RHSA-2023:2736 RHSA-2023:2951 RHSA-2023:6813

dtb-aarch64 openSUSE Leap 15.5 5.14.21-150500.55.7.1
kernel-64kb SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.7.1
kernel-syms SLE Module for Development Tools 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.7.1
kernel-obs-qa openSUSE Leap 15.5 5.14.21-150500.55.7.1
kernel-source SLE Module for Development Tools 15 SP5, SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.7.1
kernel-default SLE Workstation Extension 15 SP5, SLE Module for Legacy 15 SP5, SLE Module for Basesystem 15 SP5 +3 more 5.14.21-150500.55.7.1
kernel-kvmsmall openSUSE Leap 15.5 5.14.21-150500.55.7.1
kernel-zfcpdump SLE Module for Basesystem 15 SP5, openSUSE Leap 15.5 5.14.21-150500.55.7.1

suse advisories SUSE-SU-2023:2871-1 SUSE-SU-2023:2809-1 SUSE-SU-2023:2805-1 SUSE-SU-2023:1800-1 SUSE-SU-2023:1811-1 SUSE-SU-2023:1848-1

kernel CBL-Mariner 2.0 5.15.102.1-1

azure linux advisories AZL-13822

Azure Linux vulnerability data, Copyright (c) Microsoft Corporation, from https://github.com/microsoft/AzureLinuxVulnerabilityData via OSV, under the MIT licence; changed: normalised to fixed package versions per release. MIT

github.com/torvalds/linux@5800778 commit
bugzilla.redhat.com/show_bug.cgi?id=2173973 advisory

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2023-1095 updated 2026-11-05 cvss 5.5

kernel: netfilter: NULL pointer dereference in nf_tables due to zeroed list head

Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 more
affected: workaround, no fix planned “Out of support scope”
Red Hat CodeReady Linux Builder (v. 9) kernel-debuginfo-common-s390x 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-aarch64 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-ppc64le 5.14.0-162.6.1.el9_1
fixed: vendor fix RHSA-2022:8267
Red Hat CodeReady Linux Builder EUS (v.8.6) kernel-debuginfo-common-x86_64 4.18.0-372.75.1.el8_6, kernel-debuginfo-common-aarch64 4.18.0-372.75.1.el8_6, kernel-debuginfo-common-ppc64le 4.18.0-372.75.1.el8_6
fixed: vendor fix RHSA-2023:5627
Red Hat Enterprise Linux AppStream (v. 9) perf 5.14.0-162.6.1.el9_1, kernel-devel-matched 5.14.0-162.6.1.el9_1, kernel-debug-devel-matched 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-s390x 5.14.0-162.6.1.el9_1, kernel-zfcpdump-devel-matched 5.14.0-162.6.1.el9_1, kernel-debuginfo-common-x86_64 5.14.0-162.6.1.el9_1, +2 more
fixed: vendor fix RHSA-2022:8267
Red Hat Enterprise Linux BaseOS (v. 8) perf 4.18.0-477.10.1.el8_8, kernel 4.18.0-477.10.1.el8_8, bpftool 4.18.0-477.10.1.el8_8, kernel-core 4.18.0-477.10.1.el8_8, kernel-tools 4.18.0-477.10.1.el8_8, python3-perf 4.18.0-477.10.1.el8_8, +15 more
fixed: vendor fix RHSA-2023:2951
Red Hat Enterprise Linux BaseOS (v. 9) kernel 5.14.0-162.6.1.el9_1, bpftool 5.14.0-162.6.1.el9_1, kernel-core 5.14.0-162.6.1.el9_1, kernel-tools 5.14.0-162.6.1.el9_1, python3-perf 5.14.0-162.6.1.el9_1, kernel-modules 5.14.0-162.6.1.el9_1, +14 more
fixed: vendor fix RHSA-2022:8267
Red Hat Enterprise Linux BaseOS AUS (v.8.4) perf 4.18.0-305.108.1.el8_4, kernel 4.18.0-305.108.1.el8_4, bpftool 4.18.0-305.108.1.el8_4, kernel-core 4.18.0-305.108.1.el8_4, kernel-tools 4.18.0-305.108.1.el8_4, python3-perf 4.18.0-305.108.1.el8_4, +8 more
fixed: vendor fix RHSA-2023:5628
Red Hat Enterprise Linux BaseOS E4S (v. 8.1) perf 4.18.0-147.94.1.el8_1, kernel 4.18.0-147.94.1.el8_1, bpftool 4.18.0-147.94.1.el8_1, kernel-core 4.18.0-147.94.1.el8_1, kernel-tools 4.18.0-147.94.1.el8_1, python3-perf 4.18.0-147.94.1.el8_1, +9 more
fixed: vendor fix RHSA-2023:6813

show 8 more

Red Hat Enterprise Linux BaseOS E4S (v.8.4) perf 4.18.0-305.108.1.el8_4, kernel 4.18.0-305.108.1.el8_4, bpftool 4.18.0-305.108.1.el8_4, kernel-core 4.18.0-305.108.1.el8_4, kernel-tools 4.18.0-305.108.1.el8_4, python3-perf 4.18.0-305.108.1.el8_4, +15 more
fixed: vendor fix RHSA-2023:5628
Red Hat Enterprise Linux BaseOS EUS (v.8.6) perf 4.18.0-372.75.1.el8_6, kernel 4.18.0-372.75.1.el8_6, bpftool 4.18.0-372.75.1.el8_6, kernel-core 4.18.0-372.75.1.el8_6, kernel-tools 4.18.0-372.75.1.el8_6, python3-perf 4.18.0-372.75.1.el8_6, +15 more
fixed: vendor fix RHSA-2023:5627
Red Hat Enterprise Linux BaseOS TUS (v.8.4) perf 4.18.0-305.108.1.el8_4, kernel 4.18.0-305.108.1.el8_4, bpftool 4.18.0-305.108.1.el8_4, kernel-core 4.18.0-305.108.1.el8_4, kernel-tools 4.18.0-305.108.1.el8_4, python3-perf 4.18.0-305.108.1.el8_4, +8 more
fixed: vendor fix RHSA-2023:5628
Red Hat Enterprise Linux CRB (v. 8) kernel-debuginfo-common-x86_64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-aarch64 4.18.0-477.10.1.el8_8, kernel-debuginfo-common-ppc64le 4.18.0-477.10.1.el8_8
fixed: vendor fix RHSA-2023:2951
Red Hat Enterprise Linux NFV (v. 8) kernel-rt 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-kvm 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-kvm 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-core 4.18.0-477.10.1.rt7.274.el8_8, +4 more
fixed: vendor fix RHSA-2023:2736
Red Hat Enterprise Linux Real Time (v. 9) kernel-rt 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules-extra 5.14.0-162.6.1.rt21.168.el9_1, +2 more Red Hat Enterprise Linux Real Time for NFV (v. 9) kernel-rt 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-kvm 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-core 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-modules 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-kvm 5.14.0-162.6.1.rt21.168.el9_1, kernel-rt-debug-core 5.14.0-162.6.1.rt21.168.el9_1, +4 more
fixed: vendor fix RHSA-2022:7933
Red Hat Enterprise Linux RT (v. 8) kernel-rt 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-core 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-debug-modules 4.18.0-477.10.1.rt7.274.el8_8, kernel-rt-modules-extra 4.18.0-477.10.1.rt7.274.el8_8, +2 more
fixed: vendor fix RHSA-2023:2736
Red Hat Virtualization 4 Hypervisor for RHEL 8 perf 4.18.0-372.75.1.el8_6, kernel-debuginfo-common-x86_64 4.18.0-372.75.1.el8_6
fixed: vendor fix RHSA-2023:5627

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

cisa ICSA-23-166-11 updated 2024-04-09 cvss 5.5

Siemens SIMATIC S7-1500 TM MFP Linux Kernel

Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem <V1.1
affected: fixed in V1.1, workaround support.industry.siemens.com

Facts from CISA's republication of the vendor's own advisory (CSAF); the linked advisory is the authoritative source. CISA notification · csaf

CISA SSVC

Exploitation: none
Automatable: no
Technical impact: partial
Assessed: 19 mo ago (2025-03-10)

Exploit prediction

0.24% chance of exploitation in the next 30 days, higher than 15% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CISA ADP	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CNA	3.1	5.5	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

n/a Linux kernel netfilter subsystem.
Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem

Classification

Weakness

CWE-476 NULL Pointer Dereference

Technology feeds

Linux kernel rss critical rss

References

github.com /torvalds/linux/commit/580077855a40741cf511766129702d97ff02f4d9
patch
bugzilla.redhat.com /show_bug.cgi?id=2173973
issue-tracking, patch, third-party-advisory
cert-portal.siemens.com /productcert/html/ssa-794697.html

Sources

CVE List CVE-2023-1095
NVD CVE-2023-1095

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary