Bug 2550513 (CVE-2026-109946)

Summary: CVE-2026-109946 freerdp: FreeRDP 3.11.0 before 3.32.0 Reachable Assertion via AVC444 Odd Region Width
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: rhel-process-autobot, watson-tool-maintainers
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Doc Text:
A flaw was found in FreeRDP. When processing video streams, the client does not verify that image region dimensions are valid before performing color conversion. A malicious or compromised Remote Desktop Protocol (RDP) server can exploit this vulnerability by sending a specially crafted graphics frame to a connected user. This triggers an internal assertion failure that abruptly terminates the client application, resulting in a Denial of Service (DoS).
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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: 2562578    
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Description OSIDB Bzimport 2026-10-13 13:50:56 UTC
FreeRDP 3.11.0 before 3.32.0 does not validate that AVC444 and AVC444v2 region widths are even before YUV444 conversion, so an odd width reaches an assertion and aborts the client. A malicious or compromised RDP server can terminate a connected FreeRDP client after RDPGFX AVC444 negotiation by sending an in-bounds region rectangle with an odd width.