RHSA-2026:98614: Important: rhc security update
rhc is a client tool and daemon that connects the system to Red Hat hosted services enabling system and subscription management.Security Fix(es): net/http: golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667) crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031) net/http: net/http/internal/http2: golang.org/x/net/http2: net/http: Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669) 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
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
redhat/rhcto a version that resolves this vulnerability.Fixed in 0.3.13-3.el10_3 - Upgrade
Upgrade
redhat/rhc-debuginfoto a version that resolves this vulnerability.Fixed in 0.3.13-3.el10_3 - Upgrade
Upgrade
redhat/rhc-debugsourceto a version that resolves this vulnerability.Fixed in 0.3.13-3.el10_3 - Upgrade
Upgrade
redhat/rhcto a version that resolves this vulnerability.Fixed in 0.3.13-3.el10_3.aa - Upgrade
Upgrade
redhat/rhc-debuginfoto a version that resolves this vulnerability.Fixed in 0.3.13-3.el10_3.aa - Upgrade
Upgrade
redhat/rhc-debugsourceto a version that resolves this vulnerability.Fixed in 0.3.13-3.el10_3.aa
Event History
Frequently Asked Questions
Which systems should be prioritized for this update?
Systems with the rhc client tool or daemon installed should be prioritized, including installations of the listed rhc packages. The update addresses denial-of-service issues in Go HTTP, HTTP/2, and TLS handling.
What traffic or input is involved in the reported denial-of-service issues?
The issues involve crafted HTTP Range headers, excessive HTTP/2 SETTINGS frames, and multiple TLS ECH outer extension references. The advisory does not state whether authentication, network reachability, or a particular rhc configuration is required.
Are debug packages included in the affected software list?
Yes. The listed software includes rhc-debuginfo and rhc-debugsource in addition to rhc.