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CVE-2026-53074

5.5 · MEDIUM

In the Linux kernel, the following vulnerability has been resolved: bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb bpf_prog_test_run_skb() calls eth_type_trans() first and then uses…

Published Jun 24, 2026EPSS 0.11%

Overview

CVE-2026-53074 is a medium-severity vulnerability. It was published on June 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

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

bpf: reject short IPv4/IPv6 inputs in bpf_prog_test_run_skb

bpf_prog_test_run_skb() calls eth_type_trans() first and then uses

skb->protocol to initialize sk family and address fields for the test

run.

For IPv4 and IPv6 packets, it may access ip_hdr(skb) or ipv6_hdr(skb)

even when the provided test input only contains an Ethernet header.

Reject the input earlier if the Ethernet frame carries IPv4/IPv6

EtherType but the L3 header is too short.

Fold the IPv4/IPv6 header length checks into the existing protocol

switch and return -EINVAL before accessing the network headers.

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/0a04db240effd85773f66244645a28cedddb72d2Refgit.kernel.org/stable/c/12bec2bd4b76d81c5d3996bd14ec1b7f4d983747Refgit.kernel.org/stable/c/1f882c492d46f90bdb36f4936876c88c28dab21cRefgit.kernel.org/stable/c/6a9f38d5ff11e00bc54baab752642978805e81ebRefgit.kernel.org/stable/c/6def5fe753cbe5b279ee5fd10327b2611cbddacaRefgit.kernel.org/stable/c/7254267799d083280c0e53effc101a33add95f7bRefgit.kernel.org/stable/c/8042240412de3222d27b31e89d29336961cad9e4Refgit.kernel.org/stable/c/e6aa481f21fc7a41ed344767ea25aae9d03fae71

How CyberStrike helps

Frequently asked questions

What is CVE-2026-53074?

CVE-2026-53074 is a medium-severity vulnerability. It was published on June 24, 2026 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2026-53074?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-53074?

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-2026-53074?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-53074 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.

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