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) * crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283) 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 Red Hat buildah package, used for building OCI and Docker container images, is affected by several security vulnerabilities in underlying Go libraries. These include CVE-2025-47913 (SSH client panic due to unexpected SSH_AGENT_SUCCESS), CVE-2025-61729 (Denial of Service via crafted certificate in crypto/x509), CVE-2025-61726 (Memory exhaustion in query parameter parsing in net/url), CVE-2025-68121 (Unexpected TLS session resumption), CVE-2026-25679 (Incorrect parsing of IPv6 host literals in net/url), and CVE-2026-32283 (Denial of Service via multiple TLS 1.3 key update messages). Red Hat has issued an important security update for buildah in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions addressing these issues.
Potential Impact
The vulnerabilities can cause denial of service conditions, memory exhaustion, unexpected SSH client panics, incorrect TLS session handling, and improper parsing of network addresses. These issues may lead to service disruptions or degraded security in container image building environments using buildah. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released an official security update for buildah in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Users should apply the update to buildah version 1:1.26.11-1.el9_0 or later to remediate these vulnerabilities. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
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) * crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283) 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 Red Hat buildah package, used for building OCI and Docker container images, is affected by several security vulnerabilities in underlying Go libraries. These include CVE-2025-47913 (SSH client panic due to unexpected SSH_AGENT_SUCCESS), CVE-2025-61729 (Denial of Service via crafted certificate in crypto/x509), CVE-2025-61726 (Memory exhaustion in query parameter parsing in net/url), CVE-2025-68121 (Unexpected TLS session resumption), CVE-2026-25679 (Incorrect parsing of IPv6 host literals in net/url), and CVE-2026-32283 (Denial of Service via multiple TLS 1.3 key update messages). Red Hat has issued an important security update for buildah in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions addressing these issues.
Potential Impact
The vulnerabilities can cause denial of service conditions, memory exhaustion, unexpected SSH client panics, incorrect TLS session handling, and improper parsing of network addresses. These issues may lead to service disruptions or degraded security in container image building environments using buildah. No known exploits in the wild have been reported at this time.
Mitigation Recommendations
Red Hat has released an official security update for buildah in Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions. Users should apply the update to buildah version 1:1.26.11-1.el9_0 or later to remediate these vulnerabilities. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:16102
- Cve Count
- 6
- Additional Cves
- ["CVE-2025-61726","CVE-2025-61729","CVE-2025-68121","CVE-2026-25679","CVE-2026-32283"]
- Cvss Version
- null
Threat ID: 6a16096ce29bf47b50632ce4
Added to database: 05/26/2026, 20:58:20 UTC
Last enriched: 07/30/2026, 08:35:12 UTC
Last updated: 07/31/2026, 22:09:30 UTC
Views: 97
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