Bug 2509994 (CVE-2026-67301) - CVE-2026-67301 FreeRDP: FreeRDP: Memory disclosure or denial of service via crafted RDP update orders
Summary: CVE-2026-67301 FreeRDP: FreeRDP: Memory disclosure or denial of service via c...
Keywords:
Status: NEW
Alias: CVE-2026-67301
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: 2511623 2511624
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-08-01 13:02 UTC by OSIDB Bzimport
Modified: 2026-10-06 10:16 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-2026:61378 0 None None None 2026-08-31 12:41:27 UTC
Red Hat Product Errata RHSA-2026:61379 0 None None None 2026-08-31 12:31:48 UTC
Red Hat Product Errata RHSA-2026:62571 0 None None None 2026-09-02 11:06:42 UTC
Red Hat Product Errata RHSA-2026:65855 0 None None None 2026-09-09 08:35:19 UTC
Red Hat Product Errata RHSA-2026:66281 0 None None None 2026-09-10 01:23:41 UTC
Red Hat Product Errata RHSA-2026:66282 0 None None None 2026-09-10 01:27:17 UTC
Red Hat Product Errata RHSA-2026:68706 0 None None None 2026-09-17 17:54:43 UTC
Red Hat Product Errata RHSA-2026:68707 0 None None None 2026-09-17 18:37:53 UTC
Red Hat Product Errata RHSA-2026:71387 0 None None None 2026-09-24 08:58:51 UTC
Red Hat Product Errata RHSA-2026:71388 0 None None None 2026-09-24 06:23:07 UTC
Red Hat Product Errata RHSA-2026:71390 0 None None None 2026-09-24 06:43:07 UTC

Description OSIDB Bzimport 2026-08-01 13:02:16 UTC 
FreeRDP before 3.29.0 contains out-of-bounds read vulnerabilities in the async update message proxy for the PolygonSC and PolygonCB primary drawing orders. When AsyncUpdate is enabled (e.g., xfreerdp /async-update), update_message_PolygonSC() and update_message_PolygonCB() allocate a fresh points array but copy point data from the address of the order structure instead of from polygonSC->points / polygonCB->points, resulting in a client-side out-of-bounds read. A malicious or compromised RDP server sending crafted PolygonSC/PolygonCB update orders can trigger memory disclosure or a client crash.
Comment 2 errata-xmlrpc 2026-08-31 12:31:47 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2026:61379 https://access.redhat.com/errata/RHSA-2026:61379
Comment 3 errata-xmlrpc 2026-08-31 12:41:26 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10

Via RHSA-2026:61378 https://access.redhat.com/errata/RHSA-2026:61378
Comment 4 errata-xmlrpc 2026-09-02 11:06:41 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2026:62571 https://access.redhat.com/errata/RHSA-2026:62571
Comment 5 errata-xmlrpc 2026-09-09 08:35:18 UTC 
This issue has been addressed in the following products:

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

Via RHSA-2026:65855 https://access.redhat.com/errata/RHSA-2026:65855
Comment 6 errata-xmlrpc 2026-09-10 01:23:40 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support
  Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Via RHSA-2026:66281 https://access.redhat.com/errata/RHSA-2026:66281
Comment 7 errata-xmlrpc 2026-09-10 01:27:17 UTC 
This issue has been addressed in the following products:

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

Via RHSA-2026:66282 https://access.redhat.com/errata/RHSA-2026:66282
Comment 9 Jon Orris 2026-09-17 17:54:42 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 10.0 Extended Update Support

Via RHSA-2026:68706 https://access.redhat.com/errata/RHSA-2026:68706
Comment 10 Jon Orris 2026-09-17 18:37:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7 Extended Lifecycle Support

Via RHSA-2026:68707 https://access.redhat.com/errata/RHSA-2026:68707
Comment 11 Jon Orris 2026-09-24 06:23:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Via RHSA-2026:71388 https://access.redhat.com/errata/RHSA-2026:71388
Comment 12 Jon Orris 2026-09-24 06:43:06 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Via RHSA-2026:71390 https://access.redhat.com/errata/RHSA-2026:71390
Comment 13 Jon Orris 2026-09-24 08:58:50 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9.6 Extended Update Support

Via RHSA-2026:71387 https://access.redhat.com/errata/RHSA-2026:71387
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