CVE intelligence
CVE-2026-89439
Vulnerability intelligence
Published Sep 11, 2026Sources checked Nov 3, 2026
N/ACVSS not listedScore unavailable
What this means
Review the available evidence
CVE-2026-89439. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
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-2026-89439?
In the Linux kernel, the following vulnerability has been resolved:
platform/x86: ISST: Add a NULL check for sst_inst[]
To be consistent with other places, add a NULL check for failed socket loading by checking isst_common.sst_inst[].
Source: NVD