Bug#1143174: changing unrelated settings on wifi connection appends %00 to 802-1x.ca-cert

Package: plasma-nm
Version: 4:6.3.4-2
Severity: normal
X-Debbugs-Cc: [email protected]


Steps to reproduce:

$ nmcli connection add \
	con-name test \
	connection.autoconnect false \
	connection.permissions "user:$USER" \
	type wifi \
	wifi.mode infrastructure \
	wifi.ssid test \
	wifi-sec.key-mgmt wpa-eap \
	802-1x.eap peap \
	802-1x.ca-cert ~/ca.crt \
	802-1x.domain-suffix-match f.q.d.n \
	802-1x.phase2-auth mschapv2 \
	802-1x.identity test \
	802-1x.password-flags 2
Connection 'test' (56783ae9-144e-4977-8dcf-fe1acc08436b) successfully added.
$ nmcli connection show test | sed -n 's,^802-1x.ca-cert:.*/,,p' | hd
00000000  63 61 2e 63 72 74 0a                              |ca.crt.|
00000007
$ systemsettings
# - go to WiFi & Networking
# - select test connection
# - enable autoconnect
# - apply
$ nmcli connection show test | sed -n 's,^802-1x.ca-cert:.*/,,p' | hd
00000000  63 61 2e 63 72 74 25 30  30 0a                    |ca.crt%00.|
0000000a


In some cases there was a space character appended instead, but I couldn't
reproduce that right now.


-- System Information:
Debian Release: 13.6
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 
'stable'), (100, 'trixie-fasttrack')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.96+deb13-amd64 (SMP w/8 CPU threads; PREEMPT)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE=en_US
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages plasma-nm depends on:
ii  kio6                                      6.13.0-6
ii  kwallet6                                  6.13.0-1
ii  libc6                                     2.41-12+deb13u3
ii  libglib2.0-0t64                           2.84.4-3~deb13u3
ii  libkf6colorscheme6                        6.13.0-1
ii  libkf6completion6                         6.13.0-1
ii  libkf6configcore6                         6.13.0-2
ii  libkf6coreaddons6                         6.13.0-1
ii  libkf6dbusaddons6                         6.13.0-1
ii  libkf6i18n6                               6.13.0-1
ii  libkf6kcmutils6                           6.13.0-2
ii  libkf6kcmutilscore6                       6.13.0-2
ii  libkf6kiogui6                             6.13.0-6
ii  libkf6kiowidgets6                         6.13.0-6
ii  libkf6modemmanagerqt6                     6.13.0-1
ii  libkf6networkmanagerqt6                   6.13.0-1
ii  libkf6notifications6                      6.13.0-1
ii  libkf6solid6                              6.13.0-1
ii  libkf6wallet6                             6.13.0-1
ii  libkf6widgetsaddons6                      6.13.0-1
ii  libkf6windowsystem6                       6.13.0-2
ii  libnm0                                    1.52.1-1
ii  libopenconnect5                           9.12-3+deb13u2
ii  libqca-qt6-2                              2.3.10-1
ii  libqcoro6dbus0t64                         0.12.0-1+deb13u1
ii  libqt6core6t64                            6.8.2+dfsg-9+deb13u2
ii  libqt6dbus6                               6.8.2+dfsg-9+deb13u2
ii  libqt6gui6                                6.8.2+dfsg-9+deb13u2
ii  libqt6network6                            6.8.2+dfsg-9+deb13u2
ii  libqt6qml6                                6.8.2+dfsg-7
ii  libqt6quickwidgets6                       6.8.2+dfsg-7
ii  libqt6webenginecore6                      6.8.2+dfsg-4
ii  libqt6webenginecore6-bin                  6.8.2+dfsg-4
ii  libqt6webenginewidgets6                   6.8.2+dfsg-4
ii  libqt6widgets6                            6.8.2+dfsg-9+deb13u2
ii  libqt6xml6                                6.8.2+dfsg-9+deb13u2
ii  libstdc++6                                14.2.0-19
ii  mobile-broadband-provider-info            20250613-2
ii  network-manager                           1.52.1-1
ii  plasma-desktoptheme                       6.3.5-1
ii  qml6-module-org-kde-config                6.13.0-2
ii  qml6-module-org-kde-coreaddons            6.13.0-1
ii  qml6-module-org-kde-kcmutils              6.13.0-2
ii  qml6-module-org-kde-kirigami              6.13.0-2
ii  qml6-module-org-kde-kquickcontrolsaddons  6.13.0-1
ii  qml6-module-org-kde-ksvg                  6.13.0-1
ii  qml6-module-org-kde-networkmanager        6.13.0-1
ii  qml6-module-org-kde-prison                6.13.0-1
ii  qml6-module-org-kde-quickcharts           6.13.0-1
ii  qml6-module-qtquick                       6.8.2+dfsg-7
ii  qml6-module-qtquick-controls              6.8.2+dfsg-7
ii  qml6-module-qtquick-dialogs               6.8.2+dfsg-7
ii  qml6-module-qtquick-layouts               6.8.2+dfsg-7

Versions of packages plasma-nm recommends:
ii  systemsettings  4:6.3.4-2

Versions of packages plasma-nm suggests:
pn  network-manager-fortisslvpn  <none>
pn  network-manager-iodine       <none>
pn  network-manager-l2tp         <none>
pn  network-manager-openconnect  <none>
ii  network-manager-openvpn      1.12.3-1~deb13u1
pn  network-manager-pptp         <none>
pn  network-manager-ssh          <none>
pn  network-manager-strongswan   <none>
pn  network-manager-vpnc         <none>

-- no debconf information