---
id: CVE-2026-43028
title: 'netfilter: x_tables: ensure names are nul-terminated'
summary: |-
  In the Linux kernel, the following vulnerability has been resolved:

  netfilter: x_tables: ensure names are nul-terminated

  Reject names that lack a \0 character before feeding them
  to functions that expect c-strings.

  Fixes tag is the mo…
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H'
cvssSource: cna
vendor: Linux
product: Linux
affected:
  - >-
    Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 <
    bcac50ea0a29d430eedc5ac87b215393b567baa9
  - >-
    Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 <
    ea01c1b219f5a11c66918abaa6f052e5a74041d6
  - >-
    Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 <
    aa6cd4a8863391e0a64f62d8922cb0af732a2cf2
  - >-
    Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 <
    c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4
  - >-
    Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 <
    673bbd36cba21d10a10f0932f479df7468e26fbb
  - >-
    Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 <
    f419bdc205894750f4d3ec042bc87a1b9cde1351
  - >-
    Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 <
    73124608172890306b85f2206d8b3cac20e324f1
  - >-
    Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 <
    a958a4f90ddd7de0800b33ca9d7b886b7d40f74e
  - Linux 4.5
published: '2026-05-01'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T08:48:33.438Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-43028'
references:
  - url: 'https://git.kernel.org/stable/c/bcac50ea0a29d430eedc5ac87b215393b567baa9'
  - url: 'https://git.kernel.org/stable/c/ea01c1b219f5a11c66918abaa6f052e5a74041d6'
  - url: 'https://git.kernel.org/stable/c/aa6cd4a8863391e0a64f62d8922cb0af732a2cf2'
  - url: 'https://git.kernel.org/stable/c/c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4'
  - url: 'https://git.kernel.org/stable/c/673bbd36cba21d10a10f0932f479df7468e26fbb'
  - url: 'https://git.kernel.org/stable/c/f419bdc205894750f4d3ec042bc87a1b9cde1351'
  - url: 'https://git.kernel.org/stable/c/73124608172890306b85f2206d8b3cac20e324f1'
  - url: 'https://git.kernel.org/stable/c/a958a4f90ddd7de0800b33ca9d7b886b7d40f74e'
tags:
  - cve.org
epss: 0.00174
epssPercentile: 0.06084
ingestedAt: '2026-09-08T15:33:26.989Z'
---

## Overview

In the Linux kernel, the following vulnerability has been resolved:

netfilter: x_tables: ensure names are nul-terminated

Reject names that lack a \0 character before feeding them
to functions that expect c-strings.

Fixes tag is the most recent commit that needs this change.

## Affected

- `Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 < bcac50ea0a29d430eedc5ac87b215393b567baa9`
- `Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 < ea01c1b219f5a11c66918abaa6f052e5a74041d6`
- `Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 < aa6cd4a8863391e0a64f62d8922cb0af732a2cf2`
- `Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 < c2d4a3abb15ca14716c6d8b9ffcbcd7c63626af4`
- `Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 < 673bbd36cba21d10a10f0932f479df7468e26fbb`
- `Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 < f419bdc205894750f4d3ec042bc87a1b9cde1351`
- `Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 < 73124608172890306b85f2206d8b3cac20e324f1`
- `Linux >= c38c4597e4bf3e99860eac98211748e1ecb0e139 < a958a4f90ddd7de0800b33ca9d7b886b7d40f74e`
- `Linux 4.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.