Critical Security Flaw in GVFS: Heap Overflow and Socket Ownership Race
Summary
ALSA-2026:73998: Important: gvfs security update. Affects gvfs versions < 1.54.4-4.el10_2.1. Fixed in 1.54.4-4.el10_2.1. How to fix ↓
Check if this vulnerability affects your application
Upload a manifest or SBOM and we'll show whether you're affected, plus every other risky package in the same scan.
No signup required · Results in about 60 seconds
Background
GVFS (GNOME Virtual File System) is an essential component of the GNOME desktop environment that enables users to access local and remote files seamlessly. It supports various protocols, including FTP, SFTP, WebDAV, CIFS, and SMB, integrating with the GNOME I/O (GIO) abstraction layer. This functionality is crucial for users who require efficient file management across different systems and networks. However, recent vulnerabilities have been identified that could compromise the security of systems utilizing GVFS.
Vulnerability Detail
The vulnerabilities in GVFS stem from two critical issues: 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 race can enable unauthorized users to gain elevated privileges, posing significant risks to system integrity and data security.
How To Fix
Minimum fixed version
1.54.4-4.el10_2.1
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 restrict access to the GVFS services or disable the affected protocols until the update is applied. This can be done by modifying the configuration files or using firewall rules to limit access.
Conclusion
The identified vulnerabilities in GVFS pose serious security risks that can lead to unauthorized access and potential system compromise. It is crucial for users to update their systems promptly to mitigate these risks. Utilizing tools like Vulert can help monitor and alert for such vulnerabilities in real-time.
See every vulnerability recorded for gvfs →
FAQ
GVFS is a virtual file system for the GNOME desktop that allows users to access files across various protocols seamlessly.
The vulnerabilities include a heap-based buffer overflow and a socket ownership race condition, which can lead to code execution and privilege escalation.
You can use the Vulert playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
If an immediate update is not possible, consider restricting access to GVFS services or disabling the affected protocols as a temporary workaround.
For detailed information, refer to the CVE pages linked in the advisory or consult the official GVFS documentation.
Related vulnerabilities
Recent vulnerabilities recorded for gvfs.
