https://bugs.kde.org/show_bug.cgi?id=454975
Bug ID: 454975
Summary: Possible to freeze NeoChat temporarily via image
rendering
Product: NeoChat
Version: unspecified
Platform: Other
OS: All
Status: REPORTED
Severity: normal
Priority: NOR
Component: General
Assignee: fe...@posteo.de
Reporter: janbidle...@protonmail.com
CC: c...@carlschwan.eu
Target Milestone: ---
Created attachment 149530
--> https://bugs.kde.org/attachment.cgi?id=149530&action=edit
SVG which freezes neochat
SUMMARY
By abusing the fact that NeoChat tries to render all images on the main thread
(I assume at least) it's possible to temporarily freeze NeoChat completely by
i.e. sending an svg which links to very big images.
STEPS TO REPRODUCE
1. Have someone send an svg which has references to very big (>100MB+) images
in a room
2. Open the room with neochat.
OBSERVED RESULT
NeoChat becomes unresponsive and freezes for a while, while trying to render
the svg.
EXPECTED RESULT
NeoChat should not freeze.
SOFTWARE/OS VERSIONS
Windows: 10 21H1
Linux: Arch Linux
NeoChat: 22.04
KDE Frameworks Version: 5.94.0
Qt Version: 5.15.2
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