Control: reassign -1 xscreensaver I don't see a systemd problem here, so re-assigning to xscreensaver.
Am 08.01.21 um 13:04 schrieb Eduard Bloch:
Package: systemd
Version: 247.2-4
Severity: serious
Hi,
I am reporting this with high severity because it might affect system
security.
For details of this issue, see 978589. There are different symptoms to
see but the originating cause is apparently the same:
- xscreensaver user service is enabled as documented in its README
- lightdm starts the service in its internal user session (owned by
"lightdm" user)
- lightdm stops its session when the login happens. However,
xscreensaver process is NOT terminated for unknown reason.
- having this xscreensaver hanging around disturbs the startup of
another xscreensaver process in the new user session
- after ~15s the old xscreensaver process (from lightdm) is finally
dead, apparently a SIGTERM is emited only then!
Visible symptoms:
In the meantime, someone might lock the system (by xscreensaver-command)
and go away, assuming that xscreensaver is locked. And then it suddenly
dies.
Same things happens if xscreensaver is invoked from .xsession or similar
contents instead of user service.
Best regards,
Eduard.
-- Package-specific info:
-- System Information:
Debian Release: bullseye/sid
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'unstable'), (500, 'stable'), (1,
'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 5.10.5+ (SMP w/12 CPU threads)
Kernel taint flags: TAINT_OOT_MODULE
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /bin/bash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages systemd depends on:
ii adduser 3.118
ii libacl1 2.2.53-9
ii libapparmor1 2.13.6-3
ii libaudit1 1:3.0-2
ii libblkid1 2.36.1-4
ii libc6 2.31-9
ii libcap2 1:2.44-1
ii libcrypt1 1:4.4.17-1
ii libcryptsetup12 2:2.3.4-1
ii libgcrypt20 1.8.7-2
ii libgnutls30 3.7.0-5
ii libgpg-error0 1.38-2
ii libip4tc2 1.8.6-1
ii libkmod2 28-1
ii liblz4-1 1.9.3-1
ii liblzma5 5.2.5-1.0
ii libmount1 2.36.1-4
ii libpam0g 1.4.0-2
ii libseccomp2 2.5.1-1
ii libselinux1 3.1-2+b2
ii libsystemd0 247.2-4
ii libzstd1 1.4.8+dfsg-1
ii mount 2.36.1-4
ii systemd-timesyncd [time-daemon] 247.2-4
ii util-linux 2.36.1-4
Versions of packages systemd recommends:
ii dbus 1.12.20-1
Versions of packages systemd suggests:
ii policykit-1 0.105-29
pn systemd-container <none>
Versions of packages systemd is related to:
pn dracut <none>
ih initramfs-tools 0.139
ii libnss-systemd 247.2-4
ii libpam-systemd 247.2-4
ii udev 247.2-4
-- no debconf information
--
Chirurgen sind die einzigen Menschen, die ohne fremden Blinddarm und
ohne fremde Mandeln nicht leben können.
-- Peter Sellers
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