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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2025-11234

Qemu-kvm: vnc websocket handshake use-after-free

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Status
Published
Published
Updated
Assigning organization
redhat

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

qemu

Default version status: unaffected

  • 2.6.0 to < 10.1.2affected

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

  • 18:10.0.0-14.el10_1.5 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 8100020251120003312.489197e6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 8100020251202222937.489197e6 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

Default version status: affected

  • 8040020260916092751.522a0ee4 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Default version status: affected

  • 8040020260916092751.522a0ee4 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Default version status: affected

  • 8080020260910092120.63b34585 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Default version status: affected

  • 8080020260910092120.63b34585 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 17:10.1.0-17.el9_8 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions

Default version status: affected

  • 17:6.2.0-11.el9_0.10 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Default version status: affected

  • 17:7.2.0-14.el9_2.24 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support

Default version status: affected

  • 17:8.2.0-11.el9_4.18 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.4 Extended Update Support

Default version status: affected

  • 17:8.2.0-11.el9_4.19 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.12

Default version status: affected

  • 412.86.202608241157-0 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.16

Default version status: affected

  • 416.94.202601071926-0 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.17

Default version status: affected

  • 417.94.202601120213-0 to < *unaffected

Red Hat Red Hat OpenShift Container Platform 4.18

Default version status: affected

  • 418.94.202601071817-0 to < *unaffected

Red Hat Red Hat Enterprise Linux 6

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 7

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 7

Default version status: affected

References