Invoking pathological inputs can lead to client panic in golang.org/x/crypto/ssh/agent

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Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent

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SUSE-SU-2026:21827-1 Security update for mcphost

This update for mcphost fixes the following issues - CVE-2025-30153: github.com/getkin/kin-openapi/openapi3filter: Improper Handling of Highly Compressed Data Data Amplification in github.com/getkin/kin-openapi/openapi3filter bsc1264762. - CVE-2025-47913: golang.org/x/crypto/ssh/agent: client...

Improper Check for Dropped Privileges

Overview Affected versions of this package are vulnerable to Improper Check for Dropped Privileges due to the omission of constraint extensions such as [email protected] when adding a key to a remote agent. An attacker can bypass intended key usage restrictions by forwarding ke...

Improper Check for Dropped Privileges

Overview Affected versions of this package are vulnerable to Improper Check for Dropped Privileges due to the omission of constraint extensions such as [email protected] when adding a key to a remote agent. An attacker can bypass intended key usage restrictions by forwarding ke...

CVE-2026-39832 Invoking agent constraints dropped when forwarding keys in golang.org/x/crypto/ssh/agent

When adding a key to a remote agent constraint extensions such as [email protected] 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...

CVE-2026-39833

The CVE-2026-39833 issue affects the in-memory keyring used by golang.org/x/crypto/ssh/agent. The ConfirmBeforeUse constraint was silently accepted but not enforced by NewKeyring(), allowing keys to sign without a required confirmation prompt and without notifying the caller. The patch fixes this...

GO-2026-5005 Invoking key constraints not enforced in golang.org/x/crypto/ssh/agent

The in-memory keyring returned by NewKeyring silently accepted keys with the ConfirmBeforeUse constraint but never enforced it. The key would sign without any confirmation prompt, with no indication to the caller that the constraint was not in effect. NewKeyring now returns an error when...

RockyLinux 10 : openssh (RLSA-2025:20126)

The remote RockyLinux 10 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2025:20126 advisory. openssh: OpenSSH SSHD Agent Forwarding and X11 Forwarding CVE-2025-32728 Tenable has extracted the preceding description block directly from the RockyLinux...

Medium: runfinch-finch

Issue Overview: SSH clients receiving SSHAGENTSUCCESS when expecting a typed response will panic and cause early termination of the client process. CVE-2025-47913 Arithmetic over induction variables in loops were not correctly checked for underflow or overflow in the Go compiler cmd/compile. As a...

golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS

A flaw in golang.org/x/crypto/ssh/agent causes the SSH agent client to panic when a peer responds with the generic SSHAGENTSUCCESS 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,...

golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS

A flaw in golang.org/x/crypto/ssh/agent causes the SSH agent client to panic when a peer responds with the generic SSHAGENTSUCCESS 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,...

Important: Red Hat Security Advisory: podman security update

An update for podman is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is...

RHEL 8 : container-tools:rhel8 (RHSA-2026:16701)

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2026:16701 advisory. The container-tools module contains tools for working with containers, notably podman, buildah, skopeo, and runc. Security Fixes:...

golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS

A flaw in golang.org/x/crypto/ssh/agent causes the SSH agent client to panic when a peer responds with the generic SSHAGENTSUCCESS 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,...

RHEL 9 : buildah (RHSA-2026:16102)

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:16102 advisory. The buildah package provides a tool for facilitating building OCI container images. Among other things, buildah enables you to: Create a...

golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS

A flaw in golang.org/x/crypto/ssh/agent causes the SSH agent client to panic when a peer responds with the generic SSHAGENTSUCCESS 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,...

Important: Red Hat Security Advisory: buildah security update

An update for buildah is now available for Red Hat Enterprise Linux 10.0 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base score, which gives a detailed severity rating, is available fo...

Astra Linux - уязвимость в openssh

The PKCS11 feature in ssh-agent in OpenSSH before 9.3p2 has an insufficiently trustworthy search path, leading to remote code execution if an agent is forwarded to an attacker-controlled system. Code in /usr/lib is not necessarily safe for loading into ssh-agent. NOTE: this issue exists because o...

golang.org/x/crypto/ssh/agent: golang.org/x/crypto/ssh/agent: SSH client panic due to unexpected SSH_AGENT_SUCCESS

A flaw in golang.org/x/crypto/ssh/agent causes the SSH agent client to panic when a peer responds with the generic SSHAGENTSUCCESS 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,...