CVE-2025-49177
BaseFortify
Publication date: 2025-06-17
Last updated on: 2025-12-11
Assigner: Red Hat, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-200 | The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an information disclosure flaw in the XFIXES extension of the xorg-x11-server, specifically in the XFixesSetClientDisconnectMode request handler. It does not properly validate the length of requests, which allows a malicious client to read unintended memory containing residual data from previous requests. [1]
How can this vulnerability impact me? :
The vulnerability can lead to information disclosure by allowing an attacker to access sensitive data left in memory from previous requests. This could result in leaking confidential information to unauthorized parties on affected Linux systems running xorg-x11-server components like Xwayland and tigervnc. [1]
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should update the xorg-x11-server package to a version where the XFixesSetClientDisconnectMode request handler properly validates request lengths. This typically involves applying security patches provided by your Linux distribution or vendor as soon as they become available. Additionally, restrict untrusted clients from accessing the XFIXES extension, especially in Xwayland and tigervnc environments, until the patch is applied. [1]