Linux 7.2 Adds Ability To Limit Programs To Only Open Regular Files, Avoid Being Tricked Or Doing Silly Things
Merged as part of the many VFS changes for Linux 7.2 is the new OPENAT2_REGULAR flag for the openat2 system call. This can be used to limit programs to only open regular file-systems and avoid accidentally or intentionally opening up device files or other non-conventional data files on the file-system...
The continuous evolution of operating system security features is a constant process, driven by the need to fortify systems against increasingly sophisticated cyber threats and accidental misuse.
A strategic reader should care as this enhancement improves the security posture of Linux systems, reducing the attack surface for malicious actors and preventing unintended behaviors in applications.
Programs running on Linux 7.2 or later can now be constrained to interact only with regular files, preventing them from being tricked into accessing system-critical components or non-conventional file types inadvertently.
- · Linux system administrators
- · Cybersecurity professionals
- · Organizations using Linux for critical infrastructure
- · Malware authors
- · Attackers relying on file system exploits
- · Less secure operating systems
The immediate effect is an incremental but significant improvement in the security and stability of Linux-based applications and systems.
This could lead to a broader adoption of such granular file access controls across other operating systems and application development practices.
Over time, this contributes to a more secure global digital infrastructure, potentially raising the bar for cyber-attack complexity and cost.
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Read at Phoronix