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9.1 Critical

CVE-2026-39832 When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not…

Description

When adding a key to a remote agent constraint extensions such as restrict-destination-v00@openssh.com were not serialized in the request. Destination restrictions were silently stripped when forwarding keys, allowing unrestricted use of the key on the remote host. The client now serializes all constraint extensions. Additionally, the in-memory keyring returned by NewKeyring() now rejects keys with unsupported constraint extensions instead of silently ignoring them.

Affected products and versions

Product Affected versions Fixed in
golang.org/x/crypto/ssh/agent 0.52 earliest → < 0.52.0 0.52.0
Assisted Installer for Red Hat OpenShift Container Platform 2 Versions not published
Builds for Red Hat OpenShift Versions not published
External Secrets Operator for Red Hat OpenShift Versions not published
Multicluster Engine for Kubernetes Versions not published
OpenShift Pipelines Versions not published
OpenShift Serverless Versions not published
Red Hat Advanced Cluster Management for Kubernetes 2 Versions not published
Red Hat Advanced Cluster Security 4 Versions not published
Show the 58 other branches
Product Affected versions Fixed in
Red Hat Ceph Storage 9 Versions not published
Red Hat Edge Manager 1 Versions not published
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 8 8100020260701102925 earliest → < 8100020260701102925.afee755d 8100020260701102925.afee755d
Red Hat Enterprise Linux 9 Versions not published
Red Hat OpenShift AI (RHOAI) Versions not published
Red Hat OpenShift Container Platform 4 Versions not published
Red Hat Openshift Data Foundation 4 Versions not published
Red Hat OpenShift Dev Workspaces Operator Versions not published
Red Hat OpenShift GitOps Versions not published
Red Hat OpenShift Virtualization 4 Versions not published
Red Hat OpenStack Platform 16.2 Versions not published
Red Hat OpenStack Platform 18.0 Versions not published
Red Hat Quay 3 Versions not published
Red Hat Trusted Artifact Signer Versions not published
Red Hat OpenStack Platform 17.1 Versions not published
Red Hat Enterprise Linux AppStream (v. 8) Versions not published
Red Hat Enterprise Linux AppStream (v. 10) Versions not published
Red Hat Advanced Cluster Security for Kubernetes 4.10 1782891789 earliest → < 1782891789 1782891789
Red Hat Advanced Cluster Security for Kubernetes 4.9 1783357116 earliest → < 1783357116 1783357116
Red Hat OpenShift Builds 1.7.4 1783058284 earliest → < 1783058284 1783058284
RHEM 1.0 for RHEL 9 Versions not published
Red Hat Enterprise Linux AppStream (v. 9) Versions not published
Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) Versions not published
Red Hat Edge Manager 1.0 1783502445 earliest → < 1783502445 1783502445
Red Hat Trusted Artifact Signer 1.4 1783332061 earliest → < 1783332061 1783332061
Red Hat Openshift Data Foundation 4.22 1782934284 earliest → < 1782934284 1782934284
OpenShift API for Data Protection Versions not published
Red Hat Edge Manager 1.1 1784127775 earliest → < 1784127775 1784127775
Red Hat Quay 3.9 1784125838 earliest → < 1784125838 1784125838
RHEM 1.1 for RHEL 10 Versions not published
RHEM 1.1 for RHEL 9 Versions not published
Red Hat OpenShift Builds 1.8.1 1783612163 earliest → < 1783612163 1783612163
Red Hat Quay 3.10 1783750447 earliest → < 1783750447 1783750447
Red Hat Quay 3.16 1783955846 earliest → < 1783955846 1783955846
Red Hat Trusted Artifact Signer 1.3 1783959819 earliest → < 1783959819 1783959819
Red Hat Advanced Cluster Security 4.9 1783357116 earliest → < 1783357116 1783357116
Red Hat OpenShift Builds 1.7.1 1783058284 earliest → < 1783058284 1783058284
Red Hat Quay 3.1 1783750447 earliest → < 1783750447 1783750447
Red Hat Quay 3.12 1784353904 earliest → < 1784353904 1784353904
Red Hat Quay 3.12 1783751865 earliest → < 1783751865 1783751865
Red Hat Quay 3.15 1784351966 earliest → < 1784351966 1784351966
OpenShift API for Data Protection 1.6 1784058822 earliest → < 1784058822 1784058822
Red Hat OpenShift Builds 1.8.0 1783612163 earliest → < 1783612163 1783612163
Red Hat Enterprise Linux 8.8 Telecommunications Update Service 8080020260721142025.63 earliest → < 8080020260721142025.63b34585 8080020260721142025.63b34585
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions 8080020260721142025.63 earliest → < 8080020260721142025.63b34585 8080020260721142025.63b34585
Red Hat OpenShift Builds 1.7.3 1783058284 earliest → < 1783058284 1783058284
Red Hat OpenShift GitOps 1.19 1785149260 earliest → < 1785149260 1785149260
Red Hat OpenShift GitOps 1.20 1785211346 earliest → < 1785211346 1785211346
Red Hat OpenShift GitOps 1.2 1785211346 earliest → < 1785211346 1785211346
multicluster engine for Kubernetes 2.11 1786912006 earliest → < 1786912006 1786912006
multicluster engine for Kubernetes 2.6 1787259740 earliest → < 1787259740 1787259740
cert-manager Operator for Red Hat OpenShift Versions not published
ExternalDNS Operator Versions not published
Logging Subsystem for Red Hat OpenShift Versions not published
Cluster Observability Operator 1.5.2 1787593637 earliest → < 1787593637 1787593637
Cluster Observability Operator 1.5.0 1787593637 earliest → < 1787593637 1787593637
Logging Subsystem for Red Hat OpenShift 6.6 1788439505 earliest → < 1788439505 1788439505

References

Timeline

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The 5 CVEs of golang.org/x/crypto/ssh/agent →
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