Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: policykit-1 (Ubuntu)
Status: New => Confirmed
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https://bugs.launchpad.net/bugs/1959103
Title:
polkitd crashes with segfault with specific config file
Status in policykit-1 package in Ubuntu:
Confirmed
Bug description:
The following config file in
`/etc/polkit-1/localauthority.conf.d/02-allow-colord.conf` can cause a
segfault in `polkitd`.
```
polkit.addRule(function(action, subject) {
if ((action.id == "org.freedesktop.color-manager.create-device" ||
action.id == "org.freedesktop.color-manager.create-profile" ||
action.id == "org.freedesktop.color-manager.delete-device" ||
action.id == "org.freedesktop.color-manager.delete-profile" ||
action.id == "org.freedesktop.color-manager.modify-device" ||
action.id == "org.freedesktop.color-manager.modify-profile") &&
subject.isInGroup("{group}")) {
return polkit.Result.YES;
}
});
```
1. As normal user: `systemctl restart cron.service`
2. Error message `Failed to restart cron.service: Message recipient
disconnected from message bus without replying`
3. `dmesg` reports:
```
58.003893] polkitd[963]: segfault at 8 ip 0000558a96789856 sp
00007ffda31e45f0 error 4 in polkitd[558a96784000+f000]
[ 58.003899] Code: 50 c7 ff ff 4d 89 e5 48 89 44 24 08 eb 53 66 0f 1f 44 00
00 48 8b 44 24 10 48 89 e9 be 10 00 00 00 31 ff 48 8d 15 0b af 00 00 <4c> 8b 40
08 31 c0 e8 af cb ff ff 48 8b 7c 24 10 e8 65 c9 ff ff 4c
``
If you remove the 02-allow-colord.conf the segfault goes away and you
are normally prompted for a password. You can also find a couple of
references in the internet, e.g http://c-nergy.be/blog/?p=12043.
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