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nixpkgs/pkgs/applications/misc/djvulibre/CVE-2019-15145.patch

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commit 9658b01431cd7ff6344d7787f855179e73fe81a7
Author: Leon Bottou <leon@bottou.org>
Date: Mon Apr 8 22:55:38 2019 -0400
fix bug #298
diff --git a/libdjvu/GBitmap.h b/libdjvu/GBitmap.h
index e8e0c9b..ca89a19 100644
--- a/libdjvu/GBitmap.h
+++ b/libdjvu/GBitmap.h
@@ -566,7 +566,7 @@ GBitmap::operator[](int row)
{
if (!bytes)
uncompress();
- if (row<0 || row>=nrows) {
+ if (row<0 || row>=nrows || !bytes) {
#ifndef NDEBUG
if (zerosize < bytes_per_row + border)
G_THROW( ERR_MSG("GBitmap.zero_small") );
@@ -581,7 +581,7 @@ GBitmap::operator[](int row) const
{
if (!bytes)
((GBitmap*)this)->uncompress();
- if (row<0 || row>=nrows) {
+ if (row<0 || row>=nrows || !bytes) {
#ifndef NDEBUG
if (zerosize < bytes_per_row + border)
G_THROW( ERR_MSG("GBitmap.zero_small") );