CVE-2026-89439: platform/x86: ISST: Add a NULL check for sst_inst[]
Published Sep 11, 2026
·Updated
In the Linux kernel, the following vulnerability has been resolved:
platform/x86: ISST: Add a NULL check for sstinst[]
To be consistent with other places, add a NULL check for failed socket loading by checking isstcommon.sstinst[].
Affected Software
1 affected component
Linux Linux kernel
Event History
Sep 11, 2026
CVE Published
via MITRE·07:43 PM
Data Sourced
via MITRE·07:43 PM
Description
Frequently Asked Questions
1
Which systems are most likely to encounter this issue?
Linux kernel systems using the platform/x86 ISST code are relevant. The affected condition involves a failed socket load where the corresponding isst_common.sst_inst[] entry is NULL.
2
What is the available remediation?
Apply a Linux kernel update that includes the NULL check for isst_common.sst_inst[]. The provided stable-kernel references identify commits containing the fix.