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CVE-2026-98497

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: net/mlx5e: fix swapped IPv6 IPsec policy masks IPv6 XFRM policies may use different source and destination prefix lengths.

Published Oct 18, 2026EPSS 0.46%

Overview

CVE-2026-98497 is a high-severity vulnerability. It was published on October 18, 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. Some level of privileges is required for exploitation.

Technical description

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

net/mlx5e: fix swapped IPv6 IPsec policy masks

IPv6 XFRM policies may use different source and destination prefix

lengths. mlx5e_ipsec_policy_mask() builds the corresponding masks

independently, but setup_fte_addr6() installs each mask in the opposite

address field.

When the prefix lengths differ, this makes the source match use the

destination prefix and the destination match use the source prefix. The

resulting hardware rule can both miss traffic covered by the policy and

match traffic outside it.

Install each mask in its corresponding match field.

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/10de7ed8ef4840da9ca21de4c29578657ac367dbRefgit.kernel.org/stable/c/3803dc8477f08e0dac4050cafee0de43f32727beRefgit.kernel.org/stable/c/e73f832f0a7b2c6ea45b2124c732d639be97b547

How CyberStrike helps

Frequently asked questions

What is CVE-2026-98497?

CVE-2026-98497 is a high-severity vulnerability. It was published on October 18, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-98497?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-98497?

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-2026-98497?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98497 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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