CVE-2026-43028 netfilter: x_tables: ensure names are nul-terminated

What is CVE-2026-43028?

CVE-2026-43028 is a high-severity vulnerability in Linux kernel, published on 1 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

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.

Weakness: CWE-170

Which versions are affected by CVE-2026-43028?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2026-43028?

Apply the vendor's patch.

Is CVE-2026-43028 being exploited?

There is no known exploitation of CVE-2026-43028 in the wild and no public exploit code.

Other vulnerabilities in Linux kernel

• CVE-2026-53266 Linux Kernel Out-of-Bounds Write Exploited High 8.8
• CVE-2013-6282 Linux Kernel Improper Input Validation Exploited High 8.8
• CVE-2022-0185 Linux Kernel Heap-Based Buffer Overflow Exploited High 8.4
• CVE-2013-2094 Linux Kernel Privilege Escalation Exploited High 8.4
• CVE-2026-53362 Linux Kernel Unspecified Exploited High 7.8

All Linux kernel vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as BELL-CVE-2026-43028, DEBIAN-CVE-2026-43028, GHSA-4cwh-prx4-4w5p, ROOT-OS-DEBIAN-11-CVE-2026-43028, ROOT-OS-UBUNTU-2204-CVE-2026-43028, ROOT-OS-UBUNTU-2404-CVE-2026-43028 and 1 more.