Reference page — cumulative record through Saturday, October 3, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
AV AC PR UI S C I A CVSS EPSS %ile KEV L L L N U N N H 5.5 .0019 8.0 —
AFFECTED Product Versions Fixed Linux 699023e239658e62da6f42f47d31b54788521ec1 – — Linux 4.2 – 6.1.187
TIMELINE Sep 25 Reserved by Linux Sep 29 Published (CNA: Linux) Oct 2 ENRICHED — CVE-2026-98164 (Linux). Received CVSS 5.5 and CPE data from NVD.
In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Check write tracking in all address spaces kvm_gfn_is_write_tracked() checks only the supplied memslot, but page tracking is per-address-space and shadow pages are shared across all address spaces. With SMM, a GFN can therefore be write-tracked in one address space and appear untracked through the other. Check the supplied slot first, then the slot for the other address space. This ensures all callers honor write tracking regardless of the active address space. In particular, it prevents mmu_try_to_unsync_pages() from marking an upper-level shadow page unsync and eventually triggering the BUG in pte_list_remove(). [invert direction of the conditional. - Paolo]
| Date | Event | Detail |
|---|---|---|
| September 25, 2026 | Reserved | Reserved by Linux |
| September 29, 2026 | Published | Published (CNA: Linux) |
| October 2, 2026 | ENRICHED | ENRICHED — CVE-2026-98164 (Linux). Received CVSS 5.5 and CPE data from NVD. |
Authoritative record: CVE-2026-98164 at cve.org
Vendors: linux
Weaknesses: CWE-670
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-98164 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Saturday, October 3, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
