CVE-2026-53396 nfsd: fix posix_acl leak and ignored error in nfsd4_create_file

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix posixacl leak and ignored error in nfsd4createfile nfsd4createfile has two bugs in its ACL handling: The return value of nfsd4acltoattr is silently discarded. When the NFSv4-to-POSIX ACL conversion fails e.g., -EINVAL f...

Do Not Install Python 2

The EOL for Python 2 was reached on January 1, 2020, and there will be no updates and maintenance. If you continue to use Python 2, the system attack surface may be expanded, and system vulnerabilities and attack risks may increase. Therefore, do not use Python 2. If Python is required, you are...

Do Not Install the NIS Client

Network Information Service NIS works in client-server mode. NIS clients running the ypbind daemon obtain information from a server. NIS is inherently insecure and is vulnerable to DoS and buffer overflow attacks. Therefore, do not install the NIS client in the service scenario where NIS is not...

Do Not Allow Login with an Empty Password

Login with an empty password means that a user can log in to a system without a password. If an empty password is allowed for login, the user with an empty password may be attacked or may be used by attackers. SPDX-FileCopyrightText: 2025 Greenbone AG Some text descriptions might be excerpted fro...

Enable Kernel SMAP

Supervisor Mode Access Prevention SMAP can be enabled to prevent the kernel from accessing data in user space. If SMAP is not enabled, attackers can access data in user space through kernel-mode code redirection, which increases the attack surface and reduces system security. SMAP is enabled by...