pidgin crashes with malformed png

[Jacob Appelbaum]

This is for Pidgin 2.7.11 (libpurple 2.7.11); the package is 'pidgin' version '1:2.7.11-1ubuntu2.2' on Ubuntu Natty.

I originally reported this to the Pidgin developers but it appears to also be related to GTK on Natty. The original bug has a lot of information:
http://developer.pidgin.im/ticket/15282

In short, without just repeating the full pidgin bug, when I attempt to set the following PNG as my buddy icon, pidgin crashes:
http://developer.pidgin.im/attachment/ticket/14571/png-1-width-800-height-2.png

These images may also be of interest:
http://developer.pidgin.im/attachment/ticket/14571/local-buddy-icon.png
http://developer.pidgin.im/attachment/ticket/14571/png-1-width-519-height-2.png

This may also be of interest to the security team - GTK may be the actual issue underlying all of the tickets:
http://developer.pidgin.im/ticket/14571#comment:15

[Sina Rabbani (sina-f)]

The program 'Pidgin' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadAlloc (insufficient resources for operation)'.
  (Details: serial 24518 error_code 11 request_code 53 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jacob Appelbaum (jacob-appelbaum)]

This bug appears to actually crash the X server - so it's probably a bug in a few things. Please read the pidgin bug to better understand the issue.

[Tomasz Wasilczyk (tomkiewi)]

It's already fixed with Pidgin 2.10.7.