Bug 2567678 (CVE-2026-122266)

Summary: CVE-2026-122266 github.com/aws/aws-network-policy-agent: aws-network-policy-agent: Ingress network policy bypass via connection tracking table poisoning
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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OS: Linux   
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A flaw was found in aws-network-policy-agent. Due to improper isolation of shared connection tracking data, an authenticated attacker operating on the same host node can poison shared network tracking state using crafted raw network frames. An attacker can exploit this vulnerability to bypass ingress network policy restrictions, resulting in unauthorized network communication with co-located pods.
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Description OSIDB Bzimport 2026-11-05 22:17:26 UTC
Improper isolation of shared resources in aws-network-policy-agent in Amazon EKS Network Policy Agent before 1.3.7 (VPC CNI before 1.22.3) might allow an authenticated adjacent user to bypass NetworkPolicy ingress enforcement on co-located pods via eBPF conntrack map poisoning using crafted AF_PACKET frames.



To remediate this issue, users should upgrade to Amazon VPC CNI Managed Add-on v1.22.3 or later (which includes Network Policy Agent v1.3.7).