Bug 2560922

Summary: CVE-2026-109943 freerdp: FreeRDP 3.29.0 before 3.32.0 Double Free via Async-Update Polygon Order [fedora-43]
Product: [Fedora] Fedora Reporter: Srikanth Balasubramanian <sbalasub>
Component: freerdpAssignee: Simone Caronni <negativo17>
Status: CLOSED ERRATA QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: medium    
Version: 43CC: dasfilter, negativo17, ngompa13, oholy
Target Milestone: ---Keywords: Security, SecurityTracking
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard: {"flaws": ["e3b5bcff-3c0a-4362-aba7-bcf4decc9e06"]}
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Clone Of: Environment:
Last Closed: 2026-11-02 13:55:58 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
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Bug Depends On:    
Bug Blocks: 2550502    

Description Srikanth Balasubramanian 2026-10-26 16:26:50 UTC 
Disclaimer: Community trackers are created by Red Hat Product Security team on a best effort basis. Package maintainers are required to ascertain if the flaw indeed affects their package, before starting the update process.

FreeRDP 3.29.0 before 3.32.0 contains a double free in the client's async-update message proxy, which shallow-copies the parser-owned PolygonSC or PolygonCB points array when numPoints is zero, so both the queue consumer and parser cleanup free it. A malicious RDP server can send a point-bearing polygon order followed by a zero-point order to crash a client with +async-update enabled.
Comment 1 Ondrej Holy 2026-11-02 13:55:58 UTC 
This issue is fixed in FreeRDP 3.32.0. Fedora currently ships freerdp 3.32.2 in all supported branches (F43, F44, F45 and Rawhide), so this flaw is no longer present. Closing as ERRATA.