Описание
Security update for kubevirt
This update for kubevirt fixes the following issues:
Update to version 1.7.4, fixes various go embedded security issues:
- CVE-2025-47911: golang.org/x/net/html: various algorithms with quadratic complexity when parsing HTML documents (bsc#1251420).
- CVE-2025-47913: golang.org/x/crypto/ssh/agent: client process termination when receiving an unexpected message type in response to a key listing or signing request (bsc#1253559).
- CVE-2025-47914: golang.org/x/crypto/ssh/agent: non validated message size can cause a panic due to an out of bounds read (bsc#1254014).
- CVE-2025-58181: golang.org/x/crypto/ssh: invalidated number of mechanisms can cause unbounded memory consumption (bsc#1253935).
- CVE-2025-58190: golang.org/x/net/html: excessive memory consumption by
html.ParseFragmentwhen processing specially crafted input (bsc#1251615). - CVE-2026-7374: virt-handler: Privilege escalation and node compromise via symlink following vulnerability (bsc#1265467).
- CVE-2026-33186: google.golang.org/grpc: authorization bypass due to improper validation of the HTTP/2 :path pseudo- header (bsc#1260234).
Release notes https://github.com/kubevirt/kubevirt/releases/tag/v1.7.4
Список пакетов
SUSE Linux Enterprise Module for Containers 15 SP7
Ссылки
- Link for SUSE-SU-2026:2400-1
- E-Mail link for SUSE-SU-2026:2400-1
- SUSE Security Ratings
- SUSE Bug 1251420
- SUSE Bug 1251615
- SUSE Bug 1253559
- SUSE Bug 1253935
- SUSE Bug 1254014
- SUSE Bug 1260234
- SUSE Bug 1265467
- SUSE CVE CVE-2025-47911 page
- SUSE CVE CVE-2025-47913 page
- SUSE CVE CVE-2025-47914 page
- SUSE CVE CVE-2025-58181 page
- SUSE CVE CVE-2025-58190 page
- SUSE CVE CVE-2026-33186 page
- SUSE CVE CVE-2026-7374 page
Описание
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
Затронутые продукты
Ссылки
- CVE-2025-47911
- SUSE Bug 1251308
Описание
SSH clients receiving SSH_AGENT_SUCCESS when expecting a typed response will panic and cause early termination of the client process.
Затронутые продукты
Ссылки
- CVE-2025-47913
- SUSE Bug 1253506
Описание
SSH Agent servers do not validate the size of messages when processing new identity requests, which may cause the program to panic if the message is malformed due to an out of bounds read.
Затронутые продукты
Ссылки
- CVE-2025-47914
- SUSE Bug 1253967
Описание
SSH servers parsing GSSAPI authentication requests do not validate the number of mechanisms specified in the request, allowing an attacker to cause unbounded memory consumption.
Затронутые продукты
Ссылки
- CVE-2025-58181
- SUSE Bug 1253784
Описание
The html.Parse function in golang.org/x/net/html has an infinite parsing loop when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
Затронутые продукты
Ссылки
- CVE-2025-58190
- SUSE Bug 1251309
Описание
gRPC-Go is the Go language implementation of gRPC. Versions prior to 1.79.3 have an authorization bypass resulting from improper input validation of the HTTP/2 `:path` pseudo-header. The gRPC-Go server was too lenient in its routing logic, accepting requests where the `:path` omitted the mandatory leading slash (e.g., `Service/Method` instead of `/Service/Method`). While the server successfully routed these requests to the correct handler, authorization interceptors (including the official `grpc/authz` package) evaluated the raw, non-canonical path string. Consequently, "deny" rules defined using canonical paths (starting with `/`) failed to match the incoming request, allowing it to bypass the policy if a fallback "allow" rule was present. This affects gRPC-Go servers that use path-based authorization interceptors, such as the official RBAC implementation in `google.golang.org/grpc/authz` or custom interceptors relying on `info.FullMethod` or `grpc.Method(ctx)`; AND that have a security policy contains specific "deny" rules for canonical paths but allows other requests by default (a fallback "allow" rule). The vulnerability is exploitable by an attacker who can send raw HTTP/2 frames with malformed `:path` headers directly to the gRPC server. The fix in version 1.79.3 ensures that any request with a `:path` that does not start with a leading slash is immediately rejected with a `codes.Unimplemented` error, preventing it from reaching authorization interceptors or handlers with a non-canonical path string. While upgrading is the most secure and recommended path, users can mitigate the vulnerability using one of the following methods: Use a validating interceptor (recommended mitigation); infrastructure-level normalization; and/or policy hardening.
Затронутые продукты
Ссылки
- CVE-2026-33186
- SUSE Bug 1260085
Описание
A flaw was found in KubeVirt's virt-handler component. This vulnerability allows an authenticated OpenShift user with edit permissions in a single namespace to exploit improper symlink validation when connecting to virtual machine console sockets. By replacing the console socket with a symlink to the host's container runtime (CRI-O) socket, an attacker can hijack virt-handler's privileged connection. This enables the attacker to access any Unix socket on the host, potentially leading to full control of the node and the entire cluster.
Затронутые продукты
Ссылки
- CVE-2026-7374
- SUSE Bug 1265467