CVE-2024-42269 netfilter: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init().

What is CVE-2024-42269?

CVE-2024-42269 is a medium-severity vulnerability in Linux kernel, published on 17 Aug 2024. 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: iptables: Fix potential null-ptr-deref in ip6table_nat_table_init().

ip6table_nat_table_init() accesses net->gen->ptr[ip6table_nat_net_ops.id], but the function is exposed to user space before the entry is allocated via register_pernet_subsys().

Let's call register_pernet_subsys() before xt_register_template().

Weakness: CWE-476

Which versions are affected by CVE-2024-42269?

It affects 1 product.

Products include Linux kernel.

How do I fix CVE-2024-42269?

Apply the vendor's patch.

Is CVE-2024-42269 being exploited?

There is no known exploitation of CVE-2024-42269 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 AZL-47811, AZL-47829, BELL-CVE-2024-42269, DEBIAN-CVE-2024-42269, GHSA-m5gr-96cr-6qvm, UBUNTU-CVE-2024-42269.