Public bug reported:
After the security update libfreerdp3-3 3.24.2+dfsg-1ubuntu1.1 ->
3.32.0+dfsg-0ubuntu0.26.04.1 (installed 2026-07-21), any RDP session in
Remmina drops as soon as the Windows server clipboard contains text
larger than ~1600 bytes, i.e. when the cliprdr data has to be split into
more than one virtual channel chunk.
Reproduction (Windows 11 guest, Remmina, clipboard redirection on):
PowerShell on the server:
Set-Clipboard ('a' * 790) -> OK (~1580 bytes UTF-16)
Set-Clipboard ('a' * 850) -> client disconnects immediately (~1700 bytes)
Copying 1-2 pages of text from Windows Terminal also reliably disconnects.
Small text and file transfer via drive redirection work fine.
Versions:
libfreerdp3-3 3.32.0+dfsg-0ubuntu0.26.04.1
remmina 1.4.43+dfsg-0ubuntu0.26.04.2 (compiled with libfreerdp 3.30.0,
running with 3.32.0)
Ubuntu 26.04
Client log (G_MESSAGES_DEBUG=all remmina):
01:55:30.748 (remmina_rdp_cliprdr_request_data) - Requesting clipboard data
with format 13 from the server via ServerFormatDataRequest
[ERROR][com.freerdp.channels.addin] - [channel_client_post_message]:
cliprdr_plugin_process_received: read error
[ERROR][com.freerdp.channels.cliprdr.client] -
[cliprdr_virtual_channel_open_event_ex]: failed with error 1359
[ERROR][com.freerdp.core] - [checkChannelErrorEvent]:
cliprdr_virtual_channel_open_event_ex reported an error. Error was 1359
01:55:30.781 (rf_auto_reconnect) - network disconnection detected, initiating
reconnection attempt
Server side (RdpCoreTS) logs "TCP socket READ operation failed, error
10054" at the same moment, i.e. the client closes the connection.
Expected: multi-chunk clipboard data is reassembled and pasted; session
stays connected.
ProblemType: Bug
DistroRelease: Ubuntu 26.04
Package: libfreerdp3-3 3.32.0+dfsg-0ubuntu0.26.04.1
ProcVersionSignature: Ubuntu 7.0.0-38.38-generic 7.0.14
Uname: Linux 7.0.0-38-generic x86_64
ApportVersion: 2.34.1-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 3 02:11:33 2026
InstallationDate: Installed on 2026-06-10 (114 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
ProcEnviron:
LANG=uk_UA.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
SourcePackage: freerdp3
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: freerdp3 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug resolute wayland-session
** Attachment added: "emmina debug log (G_MESSAGES_DEBUG=all) during disconnect"
https://bugs.launchpad.net/bugs/2169360/+attachment/6005104/+files/remmina-debug.log
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https://bugs.launchpad.net/bugs/2169360
Title:
Remmina disconnects when Windows clipboard text exceeds ~1600 bytes
(cliprdr read error 1359) since 3.32.0
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