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CVE-2026-43101

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data() We need to check __in6_dev_get() for possible NULL val…

Published May 6, 2026CWE-476EPSS 0.61%

Overview

CVE-2026-43101 is a high-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. 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:

ipv6: ioam: fix potential NULL dereferences in __ioam6_fill_trace_data()

We need to check __in6_dev_get() for possible NULL value, as

suggested by Yiming Qian.

Also add skb_dst_dev_rcu() instead of skb_dst_dev(),

and two missing READ_ONCE().

Note that @dev can't be NULL.

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/3719c234fa94c37c955b1ecd3742ef280ec135e6Refgit.kernel.org/stable/c/4198aab6f000b4febb18ea820fea20634dd789c7Refgit.kernel.org/stable/c/4e65a8b8daa18d63255ec58964dd192c7fdd9f8b

How CyberStrike helps

Frequently asked questions

What is CVE-2026-43101?

CVE-2026-43101 is a high-severity vulnerability. It was published on May 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-43101?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-43101?

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-2026-43101?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-43101 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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