Bug 2567461 (CVE-2026-121961)

Summary: CVE-2026-121961 freerdp: FreeRDP: Denial of Service via dynamic channel race condition in proxy
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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A flaw was found in FreeRDP. A malicious or compromised Remote Desktop Protocol (RDP) server can trigger a race condition by repeatedly requesting the creation of an already active dynamic virtual channel while client data is concurrently processed. This issue leads to a use-after-free condition, allowing the server to crash the proxy process and result 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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Description OSIDB Bzimport 2026-11-05 21:59:47 UTC
FreeRDP before 3.32.2 contains a use-after-free vulnerability in the freerdp-proxy DRDYNVC tracker when intercepting the drdynvc channel. A malicious target server can repeatedly send CREATE_REQUEST_PDU for an active channel id, racing front DATA handling to free a borrowed context and crash the proxy process.