Subject: libqt3-mt: Possible stack overflow by recursion in
QListViewItemIterator::operator++()
Package: libqt3-mt
Version: 3:3.3.5-1
Severity: normal
Tags: patch
*** Please type your report below this line ***
When KMail has a very big mailbox (lots of messages), it crashes when
trying to display them. This is because Qt recurses too deep in a
listview iterator. Changing the recursion to a simple do-while loop
fixes the problem locally:
diff qt-copy/qt-copy/src/widgets/qlistview.cpp
qt-x11-free-3.3.5/src/widgets/qlistview.cpp
7571,7585c7571,7586
< if ( !curr )
< return *this;
<
< QListViewItem *item = curr->firstChild();
< if ( !item ) {
< while ( (item = curr->nextSibling()) == 0 ) {
< curr = curr->parent();
< if ( curr == 0 )
< break;
< }
< }
< curr = item;
< // if the next one doesn't match the flags we try one more ahead
< if ( curr && !matchesFlags( curr ) )
< ++( *this );
---
> do {
> if ( !curr )
> return *this;
>
> QListViewItem *item = curr->firstChild();
> if ( !item ) {
> while ( (item = curr->nextSibling()) == 0 ) {
> curr = curr->parent();
> if ( curr == 0 )
> break;
> }
> }
> curr = item;
> // if the next one doesn't match the flags we try one more
> ahead
> } while ( curr && !matchesFlags( curr ) );
-- System Information:
Debian Release: testing/unstable
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)
Shell: /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-2-amd64-k8
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Versions of packages libqt3-mt depends on:
ii fontconfig 2.3.2-1 generic font configuration
library
ii libaudio2 1.7-3 The Network Audio System (NAS).
(s
ii libc6 2.3.5-6 GNU C Library: Shared libraries
an
ii libfontconfig1 2.3.2-1 generic font configuration
library
ii libfreetype6 2.1.10-1 FreeType 2 font engine, shared
lib
ii libgcc1 1:4.0.2-5 GCC support library
ii libice6 6.8.2.dfsg.1-8 Inter-Client Exchange library
ii libjpeg62 6b-10 The Independent JPEG Group's JPEG
ii libmng1 1.0.8-1 Multiple-image Network Graphics
li
ii libpng12-0 1.2.8rel-5 PNG library - runtime
ii libsm6 6.8.2.dfsg.1-8 X Window System Session
Management
ii libstdc++6 4.0.2-5 The GNU Standard C++ Library v3
ii libx11-6 6.8.2.dfsg.1-8 X Window System protocol client
li
ii libxcursor1 1.1.3-1 X cursor management library
ii libxext6 6.8.2.dfsg.1-8 X Window System miscellaneous
exte
ii libxft2 2.1.7-1 FreeType-based font drawing
librar
ii libxi6 6.8.2.dfsg.1-8 X Window System Input extension
li
ii libxinerama1 6.8.2.dfsg.1-8 X Window System multi-head
display
ii libxrandr2 6.8.2.dfsg.1-8 X Window System Resize, Rotate
and
ii libxrender1 1:0.9.0-2 X Rendering Extension client
libra
ii libxt6 6.8.2.dfsg.1-8 X Toolkit Intrinsics
ii xlibs 6.8.2.dfsg.1-8 X Window System client libraries
m
ii zlib1g 1:1.2.3-4 compression library - runtime
libqt3-mt recommends no packages.
-- no debconf information
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