CVE-2025-11234
BaseFortify
Publication date: 2025-10-03
Last updated on: 2026-03-24
Assigner: Red Hat, Inc.
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| qemu | qemu | * |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-416 | The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a flaw in QEMU where if the QIOChannelWebsock object is freed while waiting to complete a WebSocket handshake, a GSource is leaked. This can cause a callback to fire later, triggering a use-after-free error in the channel. A malicious client with network access to the VNC WebSocket port can exploit this to cause a denial of service during the handshake before VNC client authentication.
How can this vulnerability impact me? :
The vulnerability can be exploited by a malicious client to cause a denial of service (DoS) on the affected system by triggering a use-after-free during the WebSocket handshake on the VNC WebSocket port. This can disrupt availability of the VNC service.