Red Hat Security Advisory

RHSA-2026:20608

containernetworking-plugins security update

Released 2026-05-26 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat Enterprise Linux AppStream EUS (v.9.6) containernetworking-plugins-1:1.6.2-3.el9_6.1

Fixes 3 records

TI-2026-24812 CVE-2026-32283 · GHSA-jrg3-gfjw-hm96

Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls

MEDIUM 40

If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00632 Published 2026-04-08 Partial fix · 1.25.9, 1.26.2 CWE-770

TI-2026-24809 CVE-2026-32280 · GHSA-m4pr-4j3g-9v7v

Unexpected work during chain building in crypto/x509

MEDIUM 40

During chain building, the amount of work that is done is not correctly limited when a large number of intermediate certificates are passed in VerifyOptions.Intermediates, which can lead to a denial of service.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00626 Published 2026-04-08 Partial fix · 1.25.9, 1.26.2 CWE-770

TI-2026-24810 CVE-2026-32281 · GHSA-gjvh-7jh8-7xhm

Inefficient policy validation in crypto/x509

LOW 39

Validating certificate chains which use policies is unexpectedly inefficient when certificates in the chain contain a very large number of policy mappings, possibly causing denial of service.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00361 Published 2026-04-08 Partial fix · 1.25.9, 1.26.2 CWE-295