A fix is available — apply it.
In the Linux kernel, the following vulnerability has been resolved:
platform/x86: ISST: Validate logical CPU id and clos id
Validate max CLOS ID and logical CPU ID for core power feature. Reject any clos level or logical CPU number greater than the supported maximum. These are used to calculate MMIO offset.
BOD 26-04 (CISA's remediation timeline, Table 1)14 days if the affected system is publicly exposed; Fix on system upgrade if it is not.
In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA's BOD 26-04 default) · Technical impact total (CISA's BOD 26-04 default). Where an input reads “CISA's BOD 26-04 default”, no one has published it for this CVE, and CISA's implementation guidance says: “If “Automatable” and “Technical Impact” information items about a CVE ID are not available and the CVE ID is not in the KEV Catalog, CISA will treat its values as “no” and “total,” respectively, until CISA or a third party provides metadata about the CVE ID. CISA will always provide the Vulnrichment data for a CVE ID listed in the KEV Catalog.” Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it
September 11, 2026
September 14, 2026
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| linux-6.12 | 6.12.100-1~deb12u1, 6.12.101-1~deb12u1, 6.12.107-1~deb12u1 |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| linux | 6.12.100-1 ... 6.12.96-1 (35 versions) |
| — |
| Package | Vulnerable range | Fix by version range | Dependents |
|---|---|---|---|
| linux | 6.12.100-1 ... 7.2~rc7-1~exp1 (179 versions) |
| — |
Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.
Each row is a time one of our pipelines fetched, updated or re-scored this CVE. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-89438
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