Description
An issue was discovered in Envoy through 1.71.1. There is a remotely exploitable NULL pointer dereference and crash in TLS when an unknown TLS alert code is received.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Service Mesh 2 | servicemesh-proxy | 2.0.3-1.el8 | RHSA-2021:1324 |
| Red Hat Service Mesh 1 | servicemesh-pilot-agent +1 | 1.1.13-3.el8 | RHSA-2021:1322 |
| Red Hat Service Mesh 1 | servicemesh-proxy | 1.1.13-1.el8 | RHSA-2021:1322 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | istio +3 | 1.9.6-2.el8 | ELSA-2021-9398, ELSA-2021-9396 |
| Oracle Linux 8 | kubeadm +2 | 1.18.18-3.el8 | ELSA-2021-9398, ELSA-2021-9396 |
| Oracle Linux 8 | olcne-olm-chart +1 | 1.3.1-5.el8 | ELSA-2021-9398 |
| Oracle Linux 8 | olcnectl +6 | 1.2.4-5.el8 | ELSA-2021-9398, ELSA-2021-9396 |
| Oracle Linux 7 | istio +1 | 1.9.6-2.el7 | ELSA-2021-9399, ELSA-2021-9397 |
| Oracle Linux 7 | kubeadm +2 | 1.18.18-3.el7 | ELSA-2021-9399, ELSA-2021-9397 |
| Oracle Linux 7 | olcne-olm-chart +1 | 1.3.1-5.el7 | ELSA-2021-9399 |
| Oracle Linux 7 | olcnectl +6 | 1.2.4-5.el7 | ELSA-2021-9399, ELSA-2021-9397 |
Advisories 6
- RHSA-2021:1322 Red Hat Security Advisory: Red Hat OpenShift Service Mesh 1.1.13 security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2021:1324 Red Hat Security Advisory: Red Hat OpenShift Service Mesh 2.0.3 security update Red Hat Security Advisories (RHSA) · Mar 18, 2026
- ELSA-2021-9398 Important: olcne security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 6, 2021
- ELSA-2021-9396 Important: olcne security update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Aug 6, 2021
- ELSA-2021-9399 Important: olcne security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 6, 2021
- ELSA-2021-9397 Important: olcne security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 6, 2021