VDB
RHSA-2026:70645
RHSA-2026:70645
PUBLISHED
CVSS 8.199999809265137 HIGH
A flaw was found in the `crypto/x509` package of `golang`. This vulnerability allows a remote attacker to cause a Denial of Service (DoS) by presenting a specially crafted X.509 certificate with a large number of DNS Subject Alternative Name (SAN) entries. The certificate verification process, specifically the `VerifyHostname` function, incurs excessive computational overhead due to repeated string operations when processing these entries. This can lead to a significant performance degradation or unresponsiveness of systems validating such certificates.
Risk Scores
CVSS 3.1
8.199999809265137
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Red Hat | cri-o-0:1.25.5-8.rhaos4.12.git6120b13.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.5-8.rhaos4.12.git6120b13.el9 |
| Red Hat | openshift-hyperkube-0:4.12.0-202609111749.p2.g0e18cfc.assembly.stream.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:4.12.0-202609111749.p2.g0e18cfc.assembly.stream.el9 |
| Red Hat | openshift-hyperkube-0:4.12.0-202609111749.p2.g0e18cfc.assembly.stream.el9.s390x as a component of Red Hat OpenShift Container Platform 4.12 | 0:4.12.0-202609111749.p2.g0e18cfc.assembly.stream.el9 |
| Red Hat | cri-tools-debugsource-0:1.25.0-7.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-7.el9 |
| Red Hat | openshift-clients-0:4.12.0-202609111749.p2.gd691257.assembly.stream.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:4.12.0-202609111749.p2.gd691257.assembly.stream.el9 |
| Red Hat | openshift-hyperkube-0:4.12.0-202609111749.p2.g0e18cfc.assembly.stream.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:4.12.0-202609111749.p2.g0e18cfc.assembly.stream.el9 |
| Red Hat | cri-tools-debugsource-0:1.25.0-8.el8.aarch64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-8.el8 |
| Red Hat | cri-o-0:1.25.5-37.rhaos4.12.git2e7f657.el8.ppc64le as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.5-37.rhaos4.12.git2e7f657.el8 |
| Red Hat | cri-tools-debugsource-0:1.25.0-7.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-7.el9 |
| Red Hat | cri-o-0:1.25.5-8.rhaos4.12.git6120b13.el9.s390x as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.5-8.rhaos4.12.git6120b13.el9 |
| Red Hat | cri-tools-debuginfo-0:1.25.0-7.el9.x86_64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-7.el9 |
| Red Hat | cri-o-0:1.25.5-37.rhaos4.12.git2e7f657.el8.x86_64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.5-37.rhaos4.12.git2e7f657.el8 |
| Red Hat | cri-tools-debugsource-0:1.25.0-8.el8.ppc64le as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-8.el8 |
| Red Hat | openshift-clients-0:4.12.0-202609111749.p2.gd691257.assembly.stream.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.12 | 0:4.12.0-202609111749.p2.gd691257.assembly.stream.el9 |
| Red Hat | cri-tools-0:1.25.0-7.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-7.el9 |
| Red Hat | cri-o-0:1.25.5-8.rhaos4.12.git6120b13.el9.aarch64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.5-8.rhaos4.12.git6120b13.el9 |
| Red Hat | cri-tools-debugsource-0:1.25.0-7.el9.ppc64le as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-7.el9 |
| Red Hat | cri-tools-debuginfo-0:1.25.0-7.el9.s390x as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-7.el9 |
| Red Hat | cri-tools-debugsource-0:1.25.0-8.el8.x86_64 as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-8.el8 |
| Red Hat | cri-tools-debuginfo-0:1.25.0-8.el8.s390x as a component of Red Hat OpenShift Container Platform 4.12 | 0:1.25.0-8.el8 |
…and 54 more
Timeline
- Oct 1, 2026 CVE Published
- Oct 2, 2026 CVE Updated
- Oct 2, 2026 Distribution Patch
- Oct 2, 2026 Distribution Patch
- Oct 2, 2026 Security Advisory
- Oct 2, 2026 Security Advisory
- Oct 2, 2026 Security Advisory
- Oct 2, 2026 Security Advisory
- Oct 2, 2026 Security Advisory
- Oct 2, 2026 Security Advisory
- Oct 2, 2026 Security Advisory
- Oct 2, 2026 Security Advisory
References
- https://access.redhat.com/errata/RHSA-2026:70645 advisory
- https://access.redhat.com/security/updates/classification/#important advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2480756 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2484204 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2484207 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2515815 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2515820 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2515839 issue
- https://bugzilla.redhat.com/show_bug.cgi?id=2515840 issue
- https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_70645.json advisory
- https://access.redhat.com/security/cve/CVE-2026-27145 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-27145 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-27145 advisory
- https://go.dev/cl/783621 advisory
- https://go.dev/issue/79694 advisory
- https://groups.google.com/g/golang-announce/c/tKs3rmcBcKw advisory
- https://pkg.go.dev/vuln/GO-2026-5037 advisory
- https://access.redhat.com/security/cve/CVE-2026-33818 advisory
- https://www.cve.org/CVERecord?id=CVE-2026-33818 advisory
- https://nvd.nist.gov/vuln/detail/CVE-2026-33818 advisory
…and 35 more