RHSA-2026:99824 - Security Advisory

Topic

An update for rhc is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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/text: golang.org/x/text: Denial of Service via invalid UTF-8 input (CVE-2026-56852)
• google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests (CVE-2026-84445)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for x86_64 - Extended Life Cycle Long Life 8.8 x86_64
• Red Hat Enterprise Linux Server - TUS 8.8 x86_64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.8 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.8 x86_64

Fixes

• BZ - 2504233 - CVE-2026-56852 golang.org/x/text: golang.org/x/text: Denial of Service via invalid UTF-8 input
• BZ - 2533175 - CVE-2026-84445 google.golang.org/grpc: gRPC-Go: Denial of Service via malformed RPC requests

CVEs

• CVE-2026-56852
• CVE-2026-84445

References

• https://access.redhat.com/security/updates/classification/#important