RHSA-2026:22485 - Security Advisory

Topic

An update is now available for Red Hat Lightspeed (formerly Insights) for Runtimes on RHEL 9.

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

An update is now available for Red Hat Lightspeed (formerly Insights) for Runtimes on RHEL 9.

Security fix(es):

• gRPC-Go: Authorization bypass due to improper HTTP/2 path validation (CVE-2026-33186)
• crypto/x509: Denial of Service via inefficient certificate chain validation (CVE-2026-32281)
• internal/syscall/unix: Root.Chmod can follow symlinks out of the root (CVE-2026-32282)
• crypto/tls: Denial of Service via multiple TLS 1.3 key update messages (CVE-2026-32283)
• crypto/x509: crypto/tls: Denial of Service vulnerability in certificate chain building (CVE-2026-32280)
• crypto/x509: Certificate validation bypass due to incorrect DNS constraint application (CVE-2026-33810)

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

Before applying this update, make sure all previously released errata relevant to your system have been applied.

For details on how to apply this update, refer to:

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

Affected Products

• Red Hat Lightspeed (formerly Insights) for Runtimes

Fixes

CVEs

• CVE-2026-32280
• CVE-2026-32281
• CVE-2026-32282
• CVE-2026-32283
• CVE-2026-33186
• CVE-2026-33810

References

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