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Description
A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.
Metrics
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CVE Modified by Red Hat, Inc.6/01/2026 12:16:17 AM
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Reference
https://access.redhat.com/errata/RHSA-2026:22147
CVE Modified by Red Hat, Inc.5/19/2026 11:16:26 AM
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Reference
https://access.redhat.com/errata/RHSA-2026:18772
CVE Modified by Red Hat, Inc.3/24/2026 7:16:21 AM
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Reference
https://access.redhat.com/errata/RHSA-2026:5578
CVE Modified by Red Hat, Inc.2/24/2026 6:16:01 AM
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Reference
https://access.redhat.com/errata/RHSA-2026:3165
CVE Modified by Red Hat, Inc.2/23/2026 9:16:19 AM
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Reference
https://access.redhat.com/errata/RHSA-2026:3077
CVE Modified by Red Hat, Inc.2/05/2026 3:15:52 PM
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Reference
https://access.redhat.com/errata/RHSA-2026:1831
CVE Modified by Red Hat, Inc.1/22/2026 3:16:05 PM
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Reference
https://access.redhat.com/errata/RHSA-2026:0702
CVE Modified by Red Hat, Inc.1/15/2026 2:16:02 PM
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Reference
https://access.redhat.com/errata/RHSA-2026:0326
Added
Reference
https://access.redhat.com/errata/RHSA-2026:0332
CVE Modified by Red Hat, Inc.12/17/2025 10:15:48 AM
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Reference
https://access.redhat.com/errata/RHSA-2025:23228
New CVE Received from Red Hat, Inc.10/03/2025 7:15:30 AM
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Description
A flaw was found in QEMU. If the QIOChannelWebsock object is freed while it is waiting to complete a handshake, a GSource is leaked. This can lead to the callback firing later on and triggering a use-after-free in the use of the channel. This can be abused by a malicious client with network access to the VNC WebSocket port to cause a denial of service during the WebSocket handshake prior to the VNC client authentication.
) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.
