RHSA-2026:53374: Important: rhc security update

Published Aug 11, 2026
·
Updated

Important: rhc security update

Other sources

rhc is a client tool and daemon that connects the system to Red Hat hosted services enabling system and subscription management.Security Fix(es): golang.org/x/net/idna: golang: net/http: golang.org/x/net/idna: Privilege escalation via incorrect Punycode label processing (CVE-2026-39821) crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (CVE-2026-27145) 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.

— Red Hat

Affected Software

20 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
redhat/rhc<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc-debuginfo<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc-debugsource<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc-debuginfo<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc-debugsource<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc-debuginfo<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc-debugsource<0.3.2-5.el10_0
0.3.2-5.el10_0
redhat/rhc<0.3.2-5.el10_0.aa
0.3.2-5.el10_0.aa
redhat/rhc-debuginfo<0.3.2-5.el10_0.aa
0.3.2-5.el10_0.aa
redhat/rhc-debugsource<0.3.2-5.el10_0.aa
0.3.2-5.el10_0.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/rhc to a version that resolves this vulnerability.

    Fixed in 0.3.2-5.el10_0
  2. Upgrade

    Upgrade redhat/rhc-debuginfo to a version that resolves this vulnerability.

    Fixed in 0.3.2-5.el10_0
  3. Upgrade

    Upgrade redhat/rhc-debugsource to a version that resolves this vulnerability.

    Fixed in 0.3.2-5.el10_0
  4. Upgrade

    Upgrade redhat/rhc to a version that resolves this vulnerability.

    Fixed in 0.3.2-5.el10_0.aa
  5. Upgrade

    Upgrade redhat/rhc-debuginfo to a version that resolves this vulnerability.

    Fixed in 0.3.2-5.el10_0.aa
  6. Upgrade

    Upgrade redhat/rhc-debugsource to a version that resolves this vulnerability.

    Fixed in 0.3.2-5.el10_0.aa

Event History

Aug 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·09:28 AM
Data Sourced
via Red Hat·09:28 AM
Severity
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