Zero out the new memory allocated with realloc().

diff --git a/apt-pkg/contrib/mmap.cc b/apt-pkg/contrib/mmap.cc
index 131cefd6e35b00cf92ead450dd81d18a4c43ef6a..77b4502f5a4dde261f800e1de21df38ec93025b4 100644 (file)
--- a/apt-pkg/contrib/mmap.cc
+++ b/apt-pkg/contrib/mmap.cc
@@ -461,6 +461,8 @@ bool DynamicMMap::Grow() {
                        return false;
 
                Base = realloc(Base, newSize);
+               /* Set new memory to 0 */
+               memset((char*)Base + WorkSpace, 0, newSize - WorkSpace);
                if (Base == NULL)
                        return false;
        }

diff --git a/debian/changelog b/debian/changelog
index 2050cb05ac1017f90fdcb500fa84f5237b8cf4ed..1cdfbe61d5d80783dcbc6e1495f635224c4a9951 100644 (file)
--- a/debian/changelog
+++ b/debian/changelog
@@ -4,6 +4,7 @@ apt (0.9.7) UNRELEASED; urgency=low
     - Fix the Fallback option to work correctly, by not calling
       realloc() on a map mapped by mmap(), and by using malloc
       and friends instead of new[].
+    - Zero out the new memory allocated with realloc().
 
  -- Julian Andres Klode <jak@debian.org>  Sat, 16 Jun 2012 14:28:38 +0200