CVE intelligence
CVE-2026-98447
Vulnerability intelligence
Published Oct 18, 2026 Sources checked Oct 21, 2026
N/A CVSS not listed Score unavailable
What this means
Review the available evidence
CVE-2026-98447. It is not in the current CISA KEV record we collected. That does not prove exploitation has not occurred.
CISA KEV Not listed Based on the latest collected catalog
EPSS 0.2% Estimated 30-day exploitation probability
Ransomware use Not marked CISA KEV ransomware field
Threat actors 0 Source-linked actor relationships
Overview
What is CVE-2026-98447? In the Linux kernel, the following vulnerability has been resolved:
xfs: fix wild memcpy access when formatting ondisk rtrefcount btree roots
LOLLM noticed that the inode btree root formatting methods copy too many bytes -- there's only one set of keys in node blocks, not two. This causes memory corruption of whatever's beyond the buffers.
Source: NVD
Sources Check the original records SecurityAlert keeps CVSS, KEV, EPSS, vendor guidance, and actor links separate so you can see where each fact came from.