Red Hat Security Advisory

RHSA-2026:61313

rhc security update

Released 2026-08-31 · Red Hat rating Important · View on Red Hat →

Fixed in

Red Hat Enterprise Linux AppStream EUS (v. 10.0) rhc-1:0.3.2-6.el10_0

Fixes 2 records

TI-2026-26182 CVE-2026-33810 · GHSA-fv83-x2xw-2j55

Case-sensitive excludedSubtrees name constraints cause Auth Bypass in crypto/x509

MEDIUM 42

When verifying a certificate chain containing excluded DNS constraints, these constraints are not correctly applied to wildcard DNS SANs which use a different case than the constraint.

CVSS 3.1HIGH 8.2 Network No auth No interaction EPSS 0.00346 Published 2026-04-08 Partial fix · 1.26.2 CWE-295

TI-2026-26183 CVE-2026-33811 · GHSA-497x-jcxf-m478

Crash when handling long CNAME response in net

MEDIUM 40

When using LookupCNAME with the cgo DNS resolver, a very long CNAME response can trigger a double-free of C memory and a crash.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00875 Published 2026-05-07 Partial fix · 1.25.10, 1.26.3 CWE-415