High [CVE-2026-27145] golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries
This high-severity Red Hat Linux advisory covers CVE-2026-27145 affecting Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux AppStream (v. 8), Red Hat Enterprise Linux AppStream (v. 9).
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Summary
golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries. Red Hat rates this important (CVSS 7.5).
Weakness: CWE-606. Affected package(s): golang-github-openprinting-ipp-usb, opentelemetry-collector, rhdh/rhdh-rhel9-operator:1782767215.
Resolved in Red Hat advisory RHSA-2026:33574 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux AppStream (v. 10); Red Hat Enterprise Linux AppStream (v. 8); Red Hat Enterprise Linux AppStream (v. 9); Red Hat Developer Hub 1.9; and 78 more.
- golang-github-openprinting-ipp-usb-0:0.9.27-7.el10_2.2
- opentelemetry-collector-0:0.152.1-1.el9_8
- rhdh/rhdh-rhel9-operator:1782767215
- opentelemetry-collector-0:0.152.1-1.el10_2
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:33574
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:33574 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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