** Changed in: avahi
Status: Unknown => Fix Released
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https://bugs.launchpad.net/bugs/1935884
Title:
avahi-daemon segfaults when a txt-record has no value
Status in Avahi:
Fix Released
Status in avahi package in Ubuntu:
New
Status in focal package in Ubuntu:
New
Bug description:
This bug is reported upstream(
https://github.com/lathiat/avahi/issues/247 ) but ubuntu focal did not
fix it.
Version: avahi-daemon (0.7-4ubuntu7.1) on Focal Fossa
Service XML causing the segfault:
```
<?xml version="1.0" standalone='no'?><!--*-nxml-*-->
<!DOCTYPE service-group SYSTEM "avahi-service.dtd">
<service-group>
<name replace-wildcards="yes">Printer</name>
<service protocol="ipv4">
<type>_ipp._tcp.</type>
<host-name>printer.local</host-name>
<port>631</port>
<txt-record>note=</txt-record>
</service>
</service-group>
```
The line `<txt-record>note=</txt-record>` causes avahi to segfault.
The Workaround I found was: `<txt-record>note=""</txt-record>` I.e. setting
the `note` to an empty string.
It can fix to merge this ( https://github.com/lathiat/avahi/pull/226
).
This bug fixed on upstream version 0.8, so this bug remains on bionic
and focal.
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