Published Sep 17, 2026Sources checked Oct 21, 2026
7.8HIGHCVSS out of 10
What this means
Review the available evidence
CVE-2026-90217 and is rated High severity with a CVSS score of 7.8. 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-2026-90217?
In the Linux kernel, the following vulnerability has been resolved:
bpf: Compare iterator types during state pruning
An iterator stack slot can be MEM_RCU or PTR_UNTRUSTED. These states must not be equal, or the verifier can prune an unsafe path.