Bug 2509985 (CVE-2026-67299) - CVE-2026-67299 FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon async message
Summary: CVE-2026-67299 FreeRDP: FreeRDP: Denial of Service via crafted WindowIcon asy...
Keywords:
Status: NEW
Alias: CVE-2026-67299
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
Whiteboard:
Depends On: 2510643 2510644 2510645
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-01 13:01 UTC by OSIDB Bzimport
Modified: 2026-08-24 07:53 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2026:54485 0 None None None 2026-08-13 08:40:21 UTC
Red Hat Product Errata RHSA-2026:54486 0 None None None 2026-08-13 08:25:24 UTC
Red Hat Product Errata RHSA-2026:54487 0 None None None 2026-08-13 09:29:29 UTC
Red Hat Product Errata RHSA-2026:58710 0 None None None 2026-08-24 07:05:40 UTC
Red Hat Product Errata RHSA-2026:58711 0 None None None 2026-08-24 05:30:00 UTC
Red Hat Product Errata RHSA-2026:58712 0 None None None 2026-08-24 06:18:34 UTC
Red Hat Product Errata RHSA-2026:58713 0 None None None 2026-08-24 07:53:41 UTC

Description OSIDB Bzimport 2026-08-01 13:01:48 UTC 
FreeRDP before 3.29.0 contains a client-side heap use-after-free in the async update message proxy for WINDOW_ICON_ORDER when AsyncUpdate is enabled (e.g. xfreerdp /async-update). In update_message_WindowIcon() a shallow CopyMemory() overwrites a freshly allocated lParam->iconInfo with the parser-owned windowIcon->iconInfo pointer. After the parser callback returns, update_recv_window_info_order() frees window_icon.iconInfo, but the queued async message still retains and later dispatches that stale pointer. A malicious or compromised RDP server sending a crafted RAIL Window Alternate Secondary Order with WINDOW_ORDER_ICON can trigger use-after-free, leading to memory corruption and client crash.
Comment 2 errata-xmlrpc 2026-08-13 08:25:23 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:54486 https://access.redhat.com/errata/RHSA-2026:54486
Comment 3 errata-xmlrpc 2026-08-13 08:40:20 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:54485 https://access.redhat.com/errata/RHSA-2026:54485
Comment 4 errata-xmlrpc 2026-08-13 09:29:28 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:54487 https://access.redhat.com/errata/RHSA-2026:54487
Comment 5 errata-xmlrpc 2026-08-24 05:29:59 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:58711 https://access.redhat.com/errata/RHSA-2026:58711
Comment 6 errata-xmlrpc 2026-08-24 06:18:33 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:58712 https://access.redhat.com/errata/RHSA-2026:58712
Comment 7 errata-xmlrpc 2026-08-24 07:05:39 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:58710 https://access.redhat.com/errata/RHSA-2026:58710
Comment 8 errata-xmlrpc 2026-08-24 07:53:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:58713 https://access.redhat.com/errata/RHSA-2026:58713
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