RHSA-2026:49944HighCVSS 8.7

Red Hat Security Advisory: container-tools:rhel8 security, bug fix, and enhancement update

Published
August 4, 2026
Last Modified
August 20, 2026

🔗 CVE IDs covered (13)

CVE-2026-25679 →CVE-2026-34986 →CVE-2026-39829 →CVE-2026-39830 →CVE-2026-39832 →CVE-2025-68121 →CVE-2026-32280 →CVE-2026-32281 →CVE-2026-32283 →CVE-2026-42508 →CVE-2025-61726 →CVE-2025-61728 →CVE-2025-61729 →

📋 Description

CVE-2025-61726 — golang: net/url: Memory exhaustion in query parameter parsing in net/url CVE-2025-61728 — golang: archive/zip: Excessive CPU consumption when building archive index in archive/zip CVE-2025-61729 — crypto/x509: golang: Denial of Service due to excessive resource consumption via crafted certificate CVE-2025-68121 — crypto/tls: crypto/tls: Incorrect certificate validation during TLS session resumption CVE-2026-25679 — net/url: Incorrect parsing of IPv6 host literals in net/url CVE-2026-32280 — crypto/x509: crypto/tls: golang: Go: Denial of Service vulnerability in certificate chain building CVE-2026-32281 — crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation CVE-2026-32283 — crypto/tls: golang: Go crypto/tls: Denial of Service via multiple TLS 1.3 key update messages CVE-2026-34986 — github.com/go-jose/go-jose/v3: github.com/go-jose/go-jose/v4: Go JOSE: Denial of Service via crafted JSON Web Encryption (JWE) object CVE-2026-39829 — golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters CVE-2026-39830 — golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses CVE-2026-39832 — golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: Security bypass due to improper handling of key restrictions CVE-2026-42508 — golang.org/x/crypto/ssh/knownhosts: golang: golang.org/x/crypto/ssh/knownhosts: Revocation bypass via unchecked SignatureKey

🎯 Affected products200

  • Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • aardvark-dns-2:1.5.0-2.module+el8.8.0+23884+2031fc78.ppc64le (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • aardvark-dns-2:1.5.0-2.module+el8.8.0+23884+2031fc78.src (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • aardvark-dns-2:1.5.0-2.module+el8.8.0+23884+2031fc78.src (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • aardvark-dns-2:1.5.0-2.module+el8.8.0+23884+2031fc78.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • aardvark-dns-2:1.5.0-2.module+el8.8.0+23884+2031fc78.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • buildah-1:1.29.8-1.module+el8.8.0+24545+b713e821.ppc64le (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-1:1.29.8-1.module+el8.8.0+24545+b713e821.src (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-1:1.29.8-1.module+el8.8.0+24545+b713e821.src (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • buildah-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • buildah-debuginfo-1:1.29.8-1.module+el8.8.0+24545+b713e821.ppc64le (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-debuginfo-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-debuginfo-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • buildah-debugsource-1:1.29.8-1.module+el8.8.0+24545+b713e821.ppc64le (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-debugsource-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-debugsource-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • buildah-tests-1:1.29.8-1.module+el8.8.0+24545+b713e821.ppc64le (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-tests-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-tests-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • buildah-tests-debuginfo-1:1.29.8-1.module+el8.8.0+24545+b713e821.ppc64le (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-tests-debuginfo-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • buildah-tests-debuginfo-1:1.29.8-1.module+el8.8.0+24545+b713e821.x86_64 (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • cockpit-podman-0:63.1-1.module+el8.8.0+23884+2031fc78.noarch (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cockpit-podman-0:63.1-1.module+el8.8.0+23884+2031fc78.noarch (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • cockpit-podman-0:63.1-1.module+el8.8.0+23884+2031fc78.src (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • cockpit-podman-0:63.1-1.module+el8.8.0+23884+2031fc78.src (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream TUS (v.8.8)
  • conmon-3:2.1.6-1.module+el8.8.0+23884+2031fc78.ppc64le (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • conmon-3:2.1.6-1.module+el8.8.0+23884+2031fc78.src (container-tools:rhel8) as a component of Red Hat Enterprise Linux AppStream E4S (v.8.8)
  • +170 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible. Workaround: To mitigate this vulnerability, implement a timeout in your archive/zip processing logic to abort the operation if it exceeds a few seconds, preventing the application from consuming an excessive amount of resources. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability. Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability. Workaround: To mitigate this denial of service vulnerability, restrict network access to any service that utilizes the `golang.org/x/crypto/ssh` library and is exposed to untrusted networks. Implement firewall rules to allow connections only from trusted hosts or networks. This action limits the ability of malicious peers to send unsolicited global request responses. A restart of the affected service may be necessary for the new network rules to be applied effectively.

🔗 References (16)