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-rw-r--r--apt-pkg/pkgcache.cc3
1 files changed, 3 insertions, 0 deletions
diff --git a/apt-pkg/pkgcache.cc b/apt-pkg/pkgcache.cc
index 1fd21a0ad..2b8cb6b86 100644
--- a/apt-pkg/pkgcache.cc
+++ b/apt-pkg/pkgcache.cc
@@ -157,6 +157,9 @@ bool pkgCache::ReMap(bool const &Errorchecks)
HeaderP->CheckSizes(DefHeader) == false)
return _error->Error(_("The package cache file is an incompatible version"));
+ if (Map.Size() < HeaderP->CacheFileSize)
+ return _error->Error(_("The package cache file is corrupted, it is too small"));
+
// Locate our VS..
if (HeaderP->VerSysName == 0 ||
(VS = pkgVersioningSystem::GetVS(StrP + HeaderP->VerSysName)) == 0)