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CVE-2026-97417

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack() The timestamp-only fast path dereferences the option stream as…

Published Sep 24, 2026EPSS 0.49%

Overview

CVE-2026-97417 is a high-severity vulnerability. It was published on September 24, 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:

netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack()

The timestamp-only fast path dereferences the option stream as

*(__be32 *)ptr, which assumes 4-byte alignment that the TCP option

stream does not guarantee. Use get_unaligned_be32() instead, which

reads the value safely and already returns host byte order, so the

htonl() on the comparison constant can be dropped.

This matches the existing get_unaligned_be32() use later in the same

function.

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/0d5ad732e4fdc569eb85861115e8f7b4c2c67852Refgit.kernel.org/stable/c/4abc1af7ac209c066f4e5dd75cdd56876e5829a9Refgit.kernel.org/stable/c/55bcc3376cd7b18954cc9814da697504fdaf12bfRefgit.kernel.org/stable/c/740ad3d17a281f7764dda4dbeb37cea52e2e31aeRefgit.kernel.org/stable/c/7ecfa46a536578a7ed335ddf31a854127268c27cRefgit.kernel.org/stable/c/a0523267de2523522b0f70972dd1ffa22ec6176cRefgit.kernel.org/stable/c/d3bf9eae486490832bd08fd62ab0ac601f346bd4

How CyberStrike helps

Frequently asked questions

What is CVE-2026-97417?

CVE-2026-97417 is a high-severity vulnerability. It was published on September 24, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-97417?

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-2026-97417?

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-2026-97417?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-97417 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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