Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2026-53131

9.4 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: netfilter: require Ethernet MAC header before using eth_hdr() `ip6t_eui64`, `xt_mac`, the `bitmap:ip,mac`, `hash:ip,mac`, and `…

Published Jun 25, 2026EPSS 0.43%

Overview

CVE-2026-53131 is a critical-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 9.4 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.4, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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

netfilter: require Ethernet MAC header before using eth_hdr()

`ip6t_eui64`, `xt_mac`, the `bitmap:ip,mac`, `hash:ip,mac`, and

`hash:mac` ipset types, and `nf_log_syslog` access `eth_hdr(skb)`

after either assuming that the skb is associated with an Ethernet

device or checking only that the `ETH_HLEN` bytes at

`skb_mac_header(skb)` lie between `skb->head` and `skb->data`.

Make these paths first verify that the skb is associated with an

Ethernet device, that the MAC header was set, and that it spans at

least a full Ethernet header before accessing `eth_hdr(skb)`.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/063f43361e884acd7300790e90194430275d0d0cRefgit.kernel.org/stable/c/367abcacc13a8e2e7624408b7f593bd1e60e49d9Refgit.kernel.org/stable/c/4435888e1bf139d2bfe5911643d4217382136743Refgit.kernel.org/stable/c/5d634afb8b83b49de562792fd0d047416a43bd4dRefgit.kernel.org/stable/c/62443dc21114c0bbc476fa62973db89743f2f137Refgit.kernel.org/stable/c/726abf97566867f808fec9d8a408eb9698bd570aRefgit.kernel.org/stable/c/cea435ea7e868ea6fdf039bc4f2090c1d829b556

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53131?

CVE-2026-53131 is a critical-severity vulnerability. It was published on June 25, 2026 and has a CVSS 3.1 base score of 9.4 (CRITICAL).

How severe is CVE-2026-53131?

This vulnerability has a CVSS 3.1 base score of 9.4, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-53131?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-53131?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53131 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related CRITICAL CVEs from 2026

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999