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crypto/x509: golang: Go crypto/x509: Denial of Service via inefficient certificate chain validation

🗓️ 16 Jul 2026 14:35:59Reported by RedHatType 
redhat
 redhat
🔗 access.redhat.com👁 17 Views

A certificate chain with many policy mappings can cause denial of service in Go's x509 validation.

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Red Hat Enterprise Linux9aarch64flightctl-agent1.1.3-1.el9emflightctl-agent-1.1.3-1.el9em.aarch64.rpm
Red Hat Enterprise Linux9ppc64leflightctl-agent1.1.3-1.el9emflightctl-agent-1.1.3-1.el9em.ppc64le.rpm
Red Hat Enterprise Linux9s390xflightctl-agent1.1.3-1.el9emflightctl-agent-1.1.3-1.el9em.s390x.rpm
Red Hat Enterprise Linux9x86_64flightctl-agent1.1.3-1.el9emflightctl-agent-1.1.3-1.el9em.x86_64.rpm
Red Hat Enterprise Linux10aarch64flightctl-agent1.1.3-1.el10emflightctl-agent-1.1.3-1.el10em.aarch64.rpm
Red Hat Enterprise Linux10ppc64leflightctl-agent1.1.3-1.el10emflightctl-agent-1.1.3-1.el10em.ppc64le.rpm
Red Hat Enterprise Linux10s390xflightctl-agent1.1.3-1.el10emflightctl-agent-1.1.3-1.el10em.s390x.rpm
Red Hat Enterprise Linux10x86_64flightctl-agent1.1.3-1.el10emflightctl-agent-1.1.3-1.el10em.x86_64.rpm
Red Hat Enterprise Linux9aarch64flightctl-cli1.1.3-1.el9emflightctl-cli-1.1.3-1.el9em.aarch64.rpm
Red Hat Enterprise Linux9ppc64leflightctl-cli1.1.3-1.el9emflightctl-cli-1.1.3-1.el9em.ppc64le.rpm
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21 Aug 2026 13:45Current
6.9Medium risk
Vulners AI Score6.9
CVSS 3.17.5
EPSS0.00355
SSVC
17