Red Hat Security Advisory: buildah security update
The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images. Security Fix(es): * golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS (CVE-2025-47913) * 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) * net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679) 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 buildah package, a tool for building OCI and Docker container images, has several security fixes addressing vulnerabilities in underlying golang libraries. These include CVE-2025-47913 (SSH client panic due to unexpected SSH_AGENT_SUCCESS), CVE-2025-61729 (denial of service from crafted certificates in crypto/x509), CVE-2025-61726 (memory exhaustion in net/url query parsing), CVE-2025-68121 (incorrect certificate validation during TLS session resumption in crypto/tls), and CVE-2026-25679 (incorrect parsing of IPv6 host literals in net/url). These issues could lead to application crashes, denial of service, or incorrect TLS behavior. The Red Hat advisory provides updated buildah packages to remediate these vulnerabilities on Red Hat Enterprise Linux 10.0 Extended Update Support and related platforms.
Potential Impact
The vulnerabilities could cause denial of service conditions due to application crashes or excessive resource consumption, and incorrect TLS session resumption could lead to unexpected behavior in secure communications. These issues affect the buildah tool and its underlying golang libraries, potentially impacting container image building processes. No known exploits in the wild have been reported. The overall security impact is rated as Important by Red Hat.
Mitigation Recommendations
Red Hat has released updated buildah packages (version 1.39.8-1.el10_0) that address these vulnerabilities. Users should apply the official security update as provided in Red Hat Enterprise Linux 10.0 Extended Update Support and related platforms. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigations are indicated beyond applying the official patch.
Red Hat Security Advisory: buildah security update
Description
The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a working container, either from scratch or using an image as a starting point; Create an image, either from a working container or using the instructions in a Dockerfile; Build both Docker and OCI images. Security Fix(es): * golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS (CVE-2025-47913) * 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) * net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679) 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
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AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The buildah package, a tool for building OCI and Docker container images, has several security fixes addressing vulnerabilities in underlying golang libraries. These include CVE-2025-47913 (SSH client panic due to unexpected SSH_AGENT_SUCCESS), CVE-2025-61729 (denial of service from crafted certificates in crypto/x509), CVE-2025-61726 (memory exhaustion in net/url query parsing), CVE-2025-68121 (incorrect certificate validation during TLS session resumption in crypto/tls), and CVE-2026-25679 (incorrect parsing of IPv6 host literals in net/url). These issues could lead to application crashes, denial of service, or incorrect TLS behavior. The Red Hat advisory provides updated buildah packages to remediate these vulnerabilities on Red Hat Enterprise Linux 10.0 Extended Update Support and related platforms.
Potential Impact
The vulnerabilities could cause denial of service conditions due to application crashes or excessive resource consumption, and incorrect TLS session resumption could lead to unexpected behavior in secure communications. These issues affect the buildah tool and its underlying golang libraries, potentially impacting container image building processes. No known exploits in the wild have been reported. The overall security impact is rated as Important by Red Hat.
Mitigation Recommendations
Red Hat has released updated buildah packages (version 1.39.8-1.el10_0) that address these vulnerabilities. Users should apply the official security update as provided in Red Hat Enterprise Linux 10.0 Extended Update Support and related platforms. For detailed update instructions, refer to the Red Hat advisory at https://access.redhat.com/articles/11258. No additional mitigations are indicated beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:14868
- Cve Count
- 5
- Additional Cves
- ["CVE-2025-61726","CVE-2025-61729","CVE-2025-68121","CVE-2026-25679"]
- State
- PUBLISHED
Threat ID: 6a160965e29bf47b5062a403
Added to database: 05/26/2026, 20:58:13 UTC
Last enriched: 08/14/2026, 19:54:07 UTC
Last updated: 09/15/2026, 01:45:45 UTC
Views: 78
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