--- id: CVE-2025-47913 title: >- golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS (CVE-2025-47913) summary: >- A flaw in golang.org/x/crypto/ssh/agent causes the SSH agent client to panic when a peer responds with the generic SSH_AGENT_SUCCESS (0x06) message to requests expecting typed replies (e.g., List, Sign). The unmarshal layer produces an une… severity: high cvss: 7.5 cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H' cvssSource: vendor cwe: CWE-241 vendor: Red Hat product: Red Hat Enterprise Linux AppStream E4S (v.8.6) affected: - multicluster_engine_for_kubernetes - openshift_developer_tools_and_services - openshift_serverless - advanced_cluster_management_for_kubernetes 2 - ansible_automation_platform 2 - ceph_storage 6 - edge_manager_preview - enterprise_linux 8 - enterprise_linux_ai_rhel_ai - openshift_container_platform 4 - openshift_gitops - openshift_virtualization 4 - openstack_platform 16.2 - ceph_storage_7_1_tools - enterprise_linux_appstream_eus_v_10_0 - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_v_8 - enterprise_linux_appstream_aus_v_8_6 - enterprise_linux_appstream_e4s_v_8_6 - enterprise_linux_appstream_tus_v_8_6 - enterprise_linux_appstream_e4s_v_8_8 - enterprise_linux_appstream_tus_v_8_8 - enterprise_linux_appstream_e4s_v_9_0 - enterprise_linux_appstream_e4s_v_9_2 - enterprise_linux_appstream_eus_v_9_4 - enterprise_linux_appstream_eus_v_9_6 - enterprise_linux_appstream_v_9 - builds_for_red_hat_openshift 1.6.0 - enterprise_linux_codeready_linux_builder_eus_v_10_0 - enterprise_linux_codeready_linux_builder_v_10 - devworkspace_operator 0.39 - openshift_api_for_data_protection 1.6 - advanced_cluster_management_for_kubernetes 2.15 - ceph_storage 7.1 - ceph_storage 8 - ceph_storage 9.0 - container_native_virtualization 4.14 - container_native_virtualization 4.16 - container_native_virtualization 4.19 - container_native_virtualization 4.20 patched: - ceph_storage_7_1_tools - enterprise_linux_appstream_eus_v_10_0 - enterprise_linux_appstream_v_10 - enterprise_linux_appstream_v_8 - enterprise_linux_appstream_aus_v_8_6 - enterprise_linux_appstream_e4s_v_8_6 - enterprise_linux_appstream_tus_v_8_6 - enterprise_linux_appstream_e4s_v_8_8 - enterprise_linux_appstream_tus_v_8_8 - enterprise_linux_appstream_e4s_v_9_0 - enterprise_linux_appstream_e4s_v_9_2 - enterprise_linux_appstream_eus_v_9_4 - enterprise_linux_appstream_eus_v_9_6 - enterprise_linux_appstream_v_9 - builds_for_red_hat_openshift 1.6.0 - enterprise_linux_codeready_linux_builder_eus_v_10_0 - enterprise_linux_codeready_linux_builder_v_10 - devworkspace_operator 0.39 - openshift_api_for_data_protection 1.6 - advanced_cluster_management_for_kubernetes 2.15 - ceph_storage 7.1 - ceph_storage 8 - ceph_storage 9.0 - container_native_virtualization 4.14 - container_native_virtualization 4.16 - container_native_virtualization 4.19 - container_native_virtualization 4.20 - openshift_ai 2.25 - openshift_gitops 1.17 - openshift_gitops 1.18 - openshift_pipelines 1.2 - openstack_platform 16.2 - openstack_platform 17.1 - openshift_data_foundation 4.20 - quay 3.10 - quay 3.12 - quay 3.13 - quay 3.14 - quay 3.15 - quay 3.16 published: '2025-11-13' updated: '2026-09-25' sourceUpdated: '2026-09-25T16:30:06+00:00' source: CSAF sourceUrl: 'https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-47913.json' references: - url: >- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-47913.json - url: 'https://access.redhat.com/security/cve/CVE-2025-47913' - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2414943' - url: 'https://www.cve.org/CVERecord?id=CVE-2025-47913' - url: 'https://nvd.nist.gov/vuln/detail/CVE-2025-47913' - url: 'https://github.com/advisories/GHSA-hcg3-q754-cr77' - url: 'https://go.dev/cl/700295' - url: 'https://go.dev/issue/75178' - url: 'https://pkg.go.dev/vuln/GO-2025-4116' - url: 'https://access.redhat.com/errata/RHSA-2026:2769' - url: 'https://access.redhat.com/errata/RHSA-2026:14868' - url: 'https://access.redhat.com/errata/RHSA-2026:5167' - url: 'https://access.redhat.com/errata/RHSA-2026:0436' - url: 'https://access.redhat.com/errata/RHSA-2026:0545' - url: 'https://access.redhat.com/errata/RHSA-2026:0753' - url: 'https://access.redhat.com/errata/RHSA-2026:10703' - url: 'https://access.redhat.com/errata/RHSA-2026:19634' - url: 'https://access.redhat.com/errata/RHSA-2026:4693' - url: 'https://access.redhat.com/errata/RHSA-2026:16701' - url: 'https://access.redhat.com/errata/RHSA-2026:16102' - url: 'https://access.redhat.com/errata/RHSA-2026:8325' - url: 'https://access.redhat.com/errata/RHSA-2026:4532' - url: 'https://access.redhat.com/errata/RHSA-2026:16702' - url: 'https://access.redhat.com/errata/RHSA-2026:12030' - url: 'https://access.redhat.com/errata/RHSA-2026:5222' - url: 'https://access.redhat.com/errata/RHSA-2026:11749' - url: 'https://access.redhat.com/errata/RHSA-2026:1084' - url: 'https://access.redhat.com/errata/RHSA-2026:0437' - url: 'https://access.redhat.com/errata/RHSA-2026:0470' - url: 'https://access.redhat.com/errata/RHSA-2025:22743' - url: 'https://github.com/golang/crypto' tags: - csaf - vex - red-hat - osv - go epss: 0.00623 epssPercentile: 0.4765 aliases: - GHSA-56w8-48fp-6mgv - GO-2025-4116 ecosystem: go ingestedAt: '2026-09-12T03:13:01.755Z' --- ## Overview A flaw in golang.org/x/crypto/ssh/agent causes the SSH agent client to panic when a peer responds with the generic SSH_AGENT_SUCCESS (0x06) message to requests expecting typed replies (e.g., List, Sign). The unmarshal layer produces an unexpected message type, which the client code does not handle, leading to panic("unreachable") or a nil-pointer dereference. A malicious agent or forwarded connection can exploit this to terminate the client process. ## Vendor advisories - **RHSA-2026:2769** · Red Hat · fixed in: Red Hat Ceph Storage 7.1 Tools · released 2026-02-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:2769) - **RHSA-2026:14868** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0) · released 2026-05-07 · [advisory](https://access.redhat.com/errata/RHSA-2026:14868) - **RHSA-2026:5167** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) · released 2026-03-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:5167) - **RHSA-2026:0436** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10) · released 2026-01-12 · [advisory](https://access.redhat.com/errata/RHSA-2026:0436) - **RHSA-2026:0545** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) · released 2026-01-14 · [advisory](https://access.redhat.com/errata/RHSA-2026:0545) - **RHSA-2026:0753** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 8) · released 2026-01-19 · [advisory](https://access.redhat.com/errata/RHSA-2026:0753) - **RHSA-2026:10703** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.8.6), Red Hat Enterprise Linux AppStream TUS (v.8.6) · released 2026-04-27 · [advisory](https://access.redhat.com/errata/RHSA-2026:10703) - **RHSA-2026:19634** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream AUS (v.8.6), Red Hat Enterprise Linux AppStream E4S (v.8.6), Red Hat Enterprise Linux AppStream TUS (v.8.6) · released 2026-05-20 · [advisory](https://access.redhat.com/errata/RHSA-2026:19634) - **RHSA-2026:4693** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8) · released 2026-03-17 · [advisory](https://access.redhat.com/errata/RHSA-2026:4693) - **RHSA-2026:16701** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.8.8), Red Hat Enterprise Linux AppStream TUS (v.8.8) · released 2026-05-13 · [advisory](https://access.redhat.com/errata/RHSA-2026:16701) - **RHSA-2026:16102** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream E4S (v.9.0) · released 2026-05-11 · [advisory](https://access.redhat.com/errata/RHSA-2026:16102) - **Red Hat VEX** · Important · affected: Multicluster Engine for Kubernetes, OpenShift Developer Tools and Services, OpenShift Serverless, Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Ansible Automation Platform 2, Red Hat Ceph Storage 6, … · no fix planned: Red Hat Advanced Cluster Management for Kubernetes 2, Red Hat Edge Manager preview, Red Hat Enterprise Linux AI (RHEL AI), Red Hat OpenShift Container Platform 4, … · updated 2026-09-25 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-47913.json) **golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS** — rated Important by Red Hat. Released 2025-11-13, updated 2026-09-25. Affected: - Multicluster Engine for Kubernetes - OpenShift Developer Tools and Services - OpenShift Serverless - Red Hat Advanced Cluster Management for Kubernetes 2 - Red Hat Ansible Automation Platform 2 - Red Hat Ceph Storage 6 - Red Hat Edge Manager preview - Red Hat Enterprise Linux 8 - Red Hat Enterprise Linux AI (RHEL AI) - Red Hat OpenShift Container Platform 4 - Red Hat OpenShift GitOps - Red Hat OpenShift Virtualization 4 - Red Hat OpenStack Platform 16.2 Fixed: - Red Hat Ceph Storage 7.1 Tools - Red Hat Enterprise Linux AppStream EUS (v. 10.0) - Red Hat Enterprise Linux AppStream (v. 10) - Red Hat Enterprise Linux AppStream (v. 8) - Red Hat Enterprise Linux AppStream AUS (v.8.6) - Red Hat Enterprise Linux AppStream E4S (v.8.6) - Red Hat Enterprise Linux AppStream TUS (v.8.6) - Red Hat Enterprise Linux AppStream E4S (v.8.8) - Red Hat Enterprise Linux AppStream TUS (v.8.8) - Red Hat Enterprise Linux AppStream E4S (v.9.0) - Red Hat Enterprise Linux AppStream E4S (v.9.2) - Red Hat Enterprise Linux AppStream EUS (v.9.4) - Red Hat Enterprise Linux AppStream EUS (v.9.6) - Red Hat Enterprise Linux AppStream (v. 9) - Builds for Red Hat OpenShift 1.6.0 - Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0) - Red Hat Enterprise Linux CodeReady Linux Builder (v. 10) - DevWorkspace Operator 0.39 - OpenShift API for Data Protection 1.6 - Red Hat Advanced Cluster Management for Kubernetes 2.15 - Red Hat Ceph Storage 7.1 - Red Hat Ceph Storage 8 - Red Hat Ceph Storage 9.0 - Red Hat Container Native Virtualization 4.14 - Red Hat Container Native Virtualization 4.16 - Red Hat Container Native Virtualization 4.19 - Red Hat Container Native Virtualization 4.20 - Red Hat OpenShift AI 2.25 - Red Hat OpenShift GitOps 1.17 - Red Hat OpenShift GitOps 1.18 - Red Hat OpenShift Pipelines 1.2 - Red Hat OpenStack Platform 16.2 - Red Hat OpenStack Platform 17.1 - Red Hat Openshift Data Foundation 4.20 - Red Hat Quay 3.10 - Red Hat Quay 3.12 - Red Hat Quay 3.13 - Red Hat Quay 3.14 - Red Hat Quay 3.15 - Red Hat Quay 3.16 No fix planned: - Red Hat Advanced Cluster Management for Kubernetes 2 - Red Hat Edge Manager preview - Red Hat Enterprise Linux AI (RHEL AI) - Red Hat OpenShift Container Platform 4 - Red Hat OpenShift GitOps - Red Hat OpenShift Virtualization 4 - Red Hat OpenStack Platform 16.2 - Multicluster Engine for Kubernetes - OpenShift Developer Tools and Services - OpenShift Serverless - Red Hat Ansible Automation Platform 2 - Red Hat Ceph Storage 6 - Red Hat Enterprise Linux 8 Not affected: - Red Hat Enterprise Linux AppStream E4S (v.9.0) - Builds for Red Hat OpenShift 1.6.0 - DevWorkspace Operator 0.39 - OpenShift API for Data Protection 1.6 - Red Hat Advanced Cluster Management for Kubernetes 2.15 - Red Hat Ceph Storage 7.1 - Red Hat Ceph Storage 8 - Red Hat Ceph Storage 9.0 - Red Hat Container Native Virtualization 4.14 - Red Hat Container Native Virtualization 4.16 ## Remediation Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 For supported configurations, refer to: https://access.redhat.com/articles/1548993 https://access.redhat.com/errata/RHSA-2026:2769 For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:14868 For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 https://access.redhat.com/errata/RHSA-2026:5167 Workarounds / mitigations: - No mitigation is currently available that meets Red Hat Product Security’s standards for usability, deployment, applicability, or stability. ## Package advisory (CVE-2025-47913) Affected packages: - `golang.org/x/crypto/ssh/agent < 0.43.0` Patched in: - `golang.org/x/crypto/ssh/agent 0.43.0` Source: https://osv.dev/vulnerability/GHSA-56w8-48fp-6mgv