Public bug reported:
After the security update 3.31.0+dfsg-0ubuntu0.26.04.1 ->
3.32.0+dfsg-0ubuntu0.26.04.1
(Ubuntu 26.04 resolute), copying to the clipboard during an RDP session drops
the
entire connection.
Setup:
- Client: Remmina 1.4.43+dfsg-0ubuntu0.26.04.2 with libfreerdp3-3
3.32.0+dfsg-0ubuntu0.26.04.1
- Server: gnome-remote-desktop 50.2-0ubuntu0.1 (remote login mode) with
libfreerdp-server3-3 3.32.0+dfsg-0ubuntu0.26.04.1
- Both machines updated to 3.32.0 on 2026-09-29/30; the problem started right
after.
gnome-remote-desktop itself was not updated (last change 2026-08-23).
Steps to reproduce:
1. Connect with Remmina (RDP, clipboard sync enabled) to a gnome-remote-desktop
server.
2. Copy content to the clipboard.
3. The session is disconnected.
Client log (Remmina):
[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
[ERROR][com.freerdp.core] - [freerdp_check_event_handles]:
checkChannelErrorEvent() failed - 0
(followed by a failed auto-reconnect: RDSTLS_RESULT_LOGON_FAILURE)
Server log (gnome-remote-desktop-daemon):
[ERROR][com.freerdp.core.peer] - [transport_read_layer]:
ERRCONNECT_CONNECT_TRANSPORT_FAILED [0x0002000D]
[RDP] Network or intentional disconnect, stopping session
... Connection reset by peer
No crash of gnome-shell or gnome-remote-desktop on the server side.
Upstream: FreeRDP 3.32.1 fixes a regression from the 3.32.0 hardening that
rejected
fragmented static-channel PDUs, which broke copy and paste of larger clipboard
content.
This matches the symptom (cliprdr is a static virtual channel). Please consider
backporting that fix, as was done for the 3.30.0 clipboard regression in
USN-8561-2.
Workaround: disabling clipboard synchronization in the Remmina profile.
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: Tue Oct 6 13:14:04 2026
InstallationDate: Installed on 2026-05-08 (151 days ago)
InstallationMedia: Ubuntu 26.04 "Resolute Raccoon" - Release amd64 (20260423.1)
ProcEnviron:
LANG=en_US.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
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https://bugs.launchpad.net/bugs/2169700
Title:
3.32.0 regression: cliprdr read error on clipboard copy disconnects
the whole RDP session
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