Red Hat Security Advisory: 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): * crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate (CVE-2025-61729) * golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * crypto/tls: Unexpected session resumption in crypto/tls (CVE-2025-68121) 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.
AI Analysis
Technical Summary
The Container Network Interface (CNI) project provides specifications and libraries for configuring network interfaces in Linux containers. This advisory addresses three vulnerabilities in Go components used by containernetworking-plugins: CVE-2025-61729 (crypto/x509) allows denial of service through crafted certificates causing excessive resource consumption; CVE-2025-61726 (net/url) causes memory exhaustion during query parameter parsing; and CVE-2025-68121 (crypto/tls) involves unexpected session resumption. These issues could impact container network plugin stability and security. Red Hat has released updated packages for RHEL 9 and its extended support variants to remediate these vulnerabilities.
Potential Impact
The vulnerabilities can lead to denial of service conditions via resource exhaustion or unexpected behavior in TLS session handling within container network plugins. This may affect container network connectivity and resource management, potentially disrupting containerized workloads relying on these plugins.
Mitigation Recommendations
Red Hat has released updated containernetworking-plugins packages for Red Hat Enterprise Linux 9 and its extended support versions that address these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:3341 and the referenced article https://access.redhat.com/articles/11258 to remediate the issues. No additional mitigation steps are indicated beyond applying the official update.
Red Hat Security Advisory: containernetworking-plugins security update
Description
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): * crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate (CVE-2025-61729) * golang: net/url: Memory exhaustion in query parameter parsing in net/url (CVE-2025-61726) * crypto/tls: Unexpected session resumption in crypto/tls (CVE-2025-68121) 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
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Container Network Interface (CNI) project provides specifications and libraries for configuring network interfaces in Linux containers. This advisory addresses three vulnerabilities in Go components used by containernetworking-plugins: CVE-2025-61729 (crypto/x509) allows denial of service through crafted certificates causing excessive resource consumption; CVE-2025-61726 (net/url) causes memory exhaustion during query parameter parsing; and CVE-2025-68121 (crypto/tls) involves unexpected session resumption. These issues could impact container network plugin stability and security. Red Hat has released updated packages for RHEL 9 and its extended support variants to remediate these vulnerabilities.
Potential Impact
The vulnerabilities can lead to denial of service conditions via resource exhaustion or unexpected behavior in TLS session handling within container network plugins. This may affect container network connectivity and resource management, potentially disrupting containerized workloads relying on these plugins.
Mitigation Recommendations
Red Hat has released updated containernetworking-plugins packages for Red Hat Enterprise Linux 9 and its extended support versions that address these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:3341 and the referenced article https://access.redhat.com/articles/11258 to remediate the issues. No additional mitigation steps are indicated beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:3341
- Cve Count
- 3
- Additional Cves
- ["CVE-2025-61729","CVE-2025-68121"]
- Cvss Version
- null
Threat ID: 6a16096ae29bf47b50630cb1
Added to database: 05/26/2026, 20:58:18 UTC
Last enriched: 07/30/2026, 08:06:10 UTC
Last updated: 07/31/2026, 19:30:12 UTC
Views: 85
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