From e2a8d2c149988a96fec0dc0ec38001091cd9061e Mon Sep 17 00:00:00 2001
From: Jason Crain <jason@aquaticape.us>
Date: Fri, 19 Dec 2014 01:56:45 -0600
Subject: [PATCH] Move array reallocation from visitLine to startLine
Fixes potential memory corruption from writing after end of lines
array.
https://bugs.freedesktop.org/show_bug.cgi?id=84555
---
poppler/TextOutputDev.cc | 10 +++++-----
1 file changed, 5 insertions(+), 5 deletions(-)
diff --git a/poppler/TextOutputDev.cc b/poppler/TextOutputDev.cc
index 4b7ff40..9ed955e 100644
--- a/poppler/TextOutputDev.cc
+++ b/poppler/TextOutputDev.cc
@@ -4072,6 +4072,11 @@ void TextSelectionDumper::startLine()
void TextSelectionDumper::finishLine()
{
+ if (nLines == linesSize) {
+ linesSize *= 2;
+ lines = (GooList **)grealloc(lines, linesSize * sizeof(GooList *));
+ }
+
if (words && words->getLength() > 0)
lines[nLines++] = words;
else if (words)
@@ -4088,11 +4093,6 @@ void TextSelectionDumper::visitLine (TextLine *line,
{
TextLineFrag frag;
- if (nLines == linesSize) {
- linesSize *= 2;
- lines = (GooList **)grealloc(lines, linesSize * sizeof(GooList *));
- }
-
frag.init(line, edge_begin, edge_end - edge_begin);
if (tableId >= 0 && frag.line->blk->tableId < 0) {
--
2.1.3