Published Sep 17, 2026Sources checked Nov 12, 2026
N/ACVSS not listedScore unavailable
What this means
Review the available evidence
CVE-2026-90148. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
What to do next
Remediation and response
Microsoft Security Response Center guidance
Vendor revision: Nov 7, 2026
Release Notes
Vendor-listed releases
6.6.161.1-1
CISA KEVNot listedBased on the latest collected catalog
EPSS0.2%Estimated 30-day exploitation probability
Ransomware useNot markedCISA KEV ransomware field
Threat actors0Source-linked actor relationships
Overview
What is CVE-2026-90148?
In the Linux kernel, the following vulnerability has been resolved:
NFSv4: Fix incorrect argument passed to nfs4_delete_lease() in nfs4_add_lease()
When nfs4_add_lease() races with a delegation return, it calls nfs4_delete_lease() to clean up. Previously, it passed priv, which can legitimately be NULL.
Passing a NULL priv eventually leads to a NULL pointer dereference in generic_setlease().