Critical Security Flaw in gvfs Package: Heap-Based Buffer Overflow and Socket Ownership Race
Summary
ALSA-2026:74370: Important: gvfs security update. Affects gvfs versions < 1.48.1-8.el9_8.1. Fixed in 1.48.1-8.el9_8.1. How to fix ↓
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Background
GVFS (GNOME Virtual File System) is a crucial component of the GNOME desktop environment, enabling users to access local and remote data seamlessly through various protocols such as FTP, SFTP, WebDAV, CIFS, and SMB. It integrates with the GNOME I/O (GIO) abstraction layer, providing a unified interface for file operations. However, recent vulnerabilities have been identified that could compromise system security, particularly affecting versions prior to 1.48.1-8.el9_8.1.
Vulnerability Detail
The gvfs package has two critical vulnerabilities: a heap-based buffer overflow in the read_reply() function (CVE-2026-84268) and a socket ownership race condition that allows local root access (CVE-2026-88924). The buffer overflow can lead to arbitrary code execution, while the socket ownership issue can enable unauthorized users to gain elevated privileges, posing significant risks to system integrity and data security.
How To Fix
Minimum fixed version
1.48.1-8.el9_8.1
This is the first release that contains the fix.
sudo dnf update gvfsTip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
As a temporary measure, users can limit access to the gvfs-admin socket to prevent unauthorized access until the package is updated. This can be done by modifying the permissions of the socket file, but it is recommended to apply the patch as soon as possible for complete protection.
Conclusion
The gvfs package has critical vulnerabilities that require immediate attention. Users are strongly encouraged to update to the latest patched version to safeguard their systems against potential exploits. Regular monitoring and updates are essential for maintaining security in open-source software.
See every vulnerability recorded for gvfs →
FAQ
GVFS is the GNOME Virtual File System that allows users to access files over various protocols, integrating with the GNOME I/O abstraction layer.
The vulnerabilities can lead to arbitrary code execution and unauthorized local root access, compromising system security.
You can use the Vulert playground at Vulert Scanner to check for vulnerabilities in your application without needing to sign up.
Yes, you can temporarily restrict access to the gvfs-admin socket to minimize risks until the package is updated.
It is advisable to regularly check for updates to your packages, ideally on a weekly basis, to ensure you have the latest security patches.
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