CVE-2026-90166
In the Linux kernel, the following vulnerability has been resolved: smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request() See the procedure below: ksmbd_tree_conn_connect ksmb…
Overview
CVE-2026-90166 is a known-severity vulnerability. It was published on September 17, 2026.
Technical description
In the Linux kernel, the following vulnerability has been resolved:
smb/server: fix null-ptr-deref in ksmbd_ipc_tree_connect_request()
See the procedure below:
ksmbd_tree_conn_connect
ksmbd_share_config_get
share->name = kstrdup() // fail
if (!test_share_config_flag(share, KSMBD_SHARE_FLAG_PIPE)) // false
// do not check `share->name`
ksmbd_ipc_tree_connect_request
strlen(share->name) // null-ptr-deref
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
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Frequently asked questions
What is CVE-2026-90166?
CVE-2026-90166 is a known-severity vulnerability. It was published on September 17, 2026.
How severe is CVE-2026-90166?
CVSS score information is not yet available for this vulnerability. Check back as the CVE record is updated by NVD analysts.
How do I fix or remediate CVE-2026-90166?
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-2026-90166?
CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-90166 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.