RLSA-2026:98449: Important: containernetworking-plugins security update
The Container Network Interface (CNI) project consists of a specification and libraries for writing plug-ins for configuring network interfaces in Linux containers, along with a number of supported plug-ins. CNI concerns itself only with network connectivity of containers and removing allocated resources when the container is deleted.
Security Fix(es):
encoding/asn1: golang: Go encoding/asn1: Denial of Service via excessive recursion in Unmarshal (CVE-2026-33818)
net/url: golang: golang net/url: Denial of Service from quadratic complexity in path resolution (CVE-2026-56860)
net/http: golang: Go net/http: Unencrypted HTTP/2 connections vulnerable to Denial of Service (CVE-2026-56853)
html/template: golang: Go html/template: Cross-Site Scripting via pathological input (CVE-2026-56858)
crypto/tls: golang: Golang crypto/tls: Denial of Service via indefinite KeyUpdate messages (CVE-2026-56862)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
rocky-linux/containernetworking-pluginsto a version that resolves this vulnerability.Fixed in 1:1.9.1-3.el9_9 - Upgrade
Upgrade
rocky-linux/containernetworking-plugins-debuginfoto a version that resolves this vulnerability.Fixed in 1:1.9.1-3.el9_9 - Upgrade
Upgrade
rocky-linux/containernetworking-plugins-debugsourceto a version that resolves this vulnerability.Fixed in 1:1.9.1-3.el9_9
Event History
Child vulnerabilities
Contains the following vulnerabilities.
Frequently Asked Questions
Which components are covered by this update?
The update applies to rocky-linux/containernetworking-plugins and its associated debuginfo and debugsource packages.
What types of security impact are addressed?
The listed fixes address denial-of-service issues in Go encoding/asn1, net/url, net/http, and crypto/tls, plus a cross-site scripting issue in html/template.
Is a specific exposure condition or workaround provided for these issues?
No exploit prerequisites, affected configurations, detection guidance, or mitigations are provided in the advisory data. The available remediation information is to apply the security update.