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CVE-2026-98174

7.5 · HIGH

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix rlist race and missing initialization TCP_Server_Info.rlist is allocated via kzalloc which zeros both ->next a…

Published Oct 6, 2026EPSS 0.33%

Overview

CVE-2026-98174 is a high-severity vulnerability. It was published on October 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:

smb: client: fix rlist race and missing initialization

TCP_Server_Info.rlist is allocated via kzalloc which zeros both ->next

and ->prev to NULL instead of pointing to itself, making list_empty()

always return false and list_add() dereference a NULL ->prev pointer.

Also, cifs_signal_cifsd_for_reconnect() can be called concurrently

from multiple cifsd threads, allowing the same server's rlist node to

be added twice into the local list, corrupting it.

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/04082b1833856cb9ed87e0d3d5f04cbf836cf7daRefgit.kernel.org/stable/c/5a8f82f9c5839389cf4036029dd75a9911049e83Refgit.kernel.org/stable/c/5f270f091256da1338c3631083e15d7f83cc05e1Refgit.kernel.org/stable/c/b5f924ffbfa976e4b97f17e8132c595b97482c2dRefgit.kernel.org/stable/c/c037d6bde3dd5fa00b017b6b98a5389ec0ebc02f

How CyberStrike helps

Frequently asked questions

What is CVE-2026-98174?

CVE-2026-98174 is a high-severity vulnerability. It was published on October 6, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2026-98174?

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-2026-98174?

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-2026-98174?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-98174 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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