I just installed Linux Mint 18 KDE Version (which is shipping Kontact 5.1.3) and tried to load my CardDAV addressbook, which I am using without Problems on gentoo/Kontact-5.3.0. And unfortunately this crashes the whole application repeatedly upon opening of the Kontact tab. It does not seem to be connected to the CarDDAV module but the actual parsing of the address fields. Reproducible: Always Steps to Reproduce: 1. Import or load Addressbook from Kontakt-5.3.0 either via CardDAV or from vcard/ldif export 2. 3. Actual Results: Some of the addressbook entries that work under Kontact-5.3.0 crash this 5.1.3 version. Repeatedly and so bad that the contact module cannot be opened and the offending entries cannot be deleted. Expected Results: It should parse the addressbook field entries in a sane way and report a problem if something does not fit and not crash the program. Also the entries should be compatible over minor version changes. I took quite so time to narrow down the error. First I thought the CardDAV exchange mechanism was faulty, but that was not the case. CalDAV works and the problem could be reproduced by manually importing the data from 5.3.0 into 5.1.3 default local addressbook as well. Then the import crashes! This bug is unfortunately so severe, that is corrupts in some way the akonadi database and prevents opening the contact module at all. Therefore the only fix I could find is akonadictl stop manually delete whole database and config under .local/.config akonadictl start This makes the contact module accessible again, but it will of course again crash upon importing an offending entry. I also thought the pictures I added to my addressbook would be the problem, but als an ldif export crashed the program. So it seems to be the parsing of the text field entries that has a serious problem. As this causes segfaults on the main program I consider it also a potential serious security issue.
Forgot to mention: I can import some of the over 200 entries. Only a subset causes the program to crash. I compared the "offending" and the working entries and could not find any obvious reasons. E.g. some entries using special accent characters work, some without crash.
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This bug has been in NEEDSINFO status with no change for at least 30 days. The bug is now closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging Thank you for helping us make KDE software even better for everyone!