Red Hat Security Advisory: skopeo security update
The skopeo command lets you inspect images from container image registries, get images and image layers, and use signatures to create and verify files. 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 skopeo utility in Red Hat Enterprise Linux 10 is affected by three security vulnerabilities stemming from underlying Go language libraries. CVE-2025-61729 involves a denial of service caused by excessive resource consumption triggered by crafted certificates in the crypto/x509 package. CVE-2025-61726 is a memory exhaustion vulnerability in the net/url package during query parameter parsing. CVE-2025-68121 concerns unexpected session resumption behavior in the crypto/tls package. Red Hat has released updated skopeo packages to address these issues across multiple architectures and variants of RHEL 10.
Potential Impact
Successful exploitation of these vulnerabilities could lead to denial of service conditions or unexpected TLS session behaviors when using skopeo to interact with container images. This may disrupt container image inspection or verification 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 skopeo packages for Red Hat Enterprise Linux 10 and its variants that fix these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:3343. For update instructions, refer to https://access.redhat.com/articles/11258. No additional mitigation steps are indicated by the vendor.
Red Hat Security Advisory: skopeo security update
Description
The skopeo command lets you inspect images from container image registries, get images and image layers, and use signatures to create and verify files. 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 skopeo utility in Red Hat Enterprise Linux 10 is affected by three security vulnerabilities stemming from underlying Go language libraries. CVE-2025-61729 involves a denial of service caused by excessive resource consumption triggered by crafted certificates in the crypto/x509 package. CVE-2025-61726 is a memory exhaustion vulnerability in the net/url package during query parameter parsing. CVE-2025-68121 concerns unexpected session resumption behavior in the crypto/tls package. Red Hat has released updated skopeo packages to address these issues across multiple architectures and variants of RHEL 10.
Potential Impact
Successful exploitation of these vulnerabilities could lead to denial of service conditions or unexpected TLS session behaviors when using skopeo to interact with container images. This may disrupt container image inspection or verification 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 skopeo packages for Red Hat Enterprise Linux 10 and its variants that fix these vulnerabilities. Users should apply the security update as detailed in Red Hat advisory RHSA-2026:3343. For update instructions, refer to 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-2026:3343
- Cve Count
- 3
- Additional Cves
- ["CVE-2025-61729","CVE-2025-68121"]
- State
- PUBLISHED
Threat ID: 6a16096ae29bf47b50630c9e
Added to database: 05/26/2026, 20:58:18 UTC
Last enriched: 08/14/2026, 19:44:55 UTC
Last updated: 09/12/2026, 10:01:28 UTC
Views: 80
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