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FreeRDP versions before 3.31.0 contain an integer overflow in WinPR's Stream_EnsureRemainingCapacity function that allows remote attackers to cause denial of service. A malicious RD Gateway peer can send a WebSocket Ping frame with a crafted 64-bit extended payload length to trigger integer wraparound, resulting in a double free that crashes the FreeRDP client during connection.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Oracle_linux | — | Upgrade freerdp-serverUpgrade libwinprUpgrade freerdp-develUpgrade freerdpUpgrade libwinpr-develUpgrade freerdp-libs | Oct 22, 2026 | Sep 15, 2026 |
| Redhat_linux | — | Upgrade freerdpUpgrade libwinpr-debuginfoUpgrade libwinpr-develUpgrade freerdp-debugsourceUpgrade libwinprUpgrade freerdp-libs-debuginfoUpgrade freerdp-server-debuginfoNo solution existsUpgrade freerdp-libsUpgrade freerdp-debuginfoUpgrade freerdp-develUpgrade freerdp-server | Sep 17, 2026 | Sep 15, 2026 |
| Rocky_linux | — | Upgrade freerdp-develUpgrade freerdp-libs-debuginfoUpgrade freerdpUpgrade libwinpr-develUpgrade freerdp-server-debuginfoUpgrade libwinprUpgrade freerdp-libsUpgrade libwinpr-debuginfoUpgrade freerdp-serverUpgrade freerdp-debugsourceUpgrade freerdp-debuginfo | Oct 8, 2026 | Oct 6, 2026 |
| Ubuntu | — | Upgrade freerdp3 | Sep 22, 2026 | Sep 16, 2026 |
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