CVE-2025-49176
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-190 | The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is an integer overflow flaw in the Big Requests extension of the xorg-x11-server-Xwayland. The problem occurs because the request length is multiplied by 4 before the system checks if it exceeds the maximum allowed size. This multiplication can cause the length value to overflow, bypassing the size check and potentially leading to memory corruption. [1]
How can this vulnerability impact me? :
The vulnerability can lead to memory corruption, which may be exploited to cause denial of service or potentially allow an attacker to execute arbitrary code. It affects all Linux operating systems using the vulnerable components, posing a high severity risk. [1]
What immediate steps should I take to mitigate this vulnerability?
To mitigate this vulnerability, you should update the affected components, specifically the xorg-x11-server-Xwayland and tigervnc packages, to the fixed versions provided by your Linux distribution vendor. Since the vulnerability is managed by Red Hat and tracked under Bugzilla ID 2369954, applying the official security patches released by Red Hat as of June 17, 2025, is recommended. Additionally, limit access to systems running the vulnerable software to trusted users only until patches are applied. [1]