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0030518: Foundation Classes - NCollection_IndexedDataMap array out of bounds

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Implementation of NCollection_IndexedDataMap::Iterator is revised to avoid unintended access to the element out of array bounds
This commit is contained in:
abv
2019-09-16 08:01:13 +03:00
committed by bugmaster
parent 1e0a1fc9cb
commit eb62cbc494
2 changed files with 19 additions and 19 deletions
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12
src/NCollection/NCollection_BaseMap.cxx
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@@ -17,6 +17,7 @@
#include <NCollection_BaseMap.hxx>
#include <TCollection.hxx>
#include <Standard_Assert.hxx>
//=======================================================================
//function : BeginResize
@@ -29,20 +30,17 @@ Standard_Boolean NCollection_BaseMap::BeginResize
NCollection_ListNode**& data1,
NCollection_ListNode**& data2) const
{
// get next size for the buckets array
N = NextPrimeForMap(NbBuckets);
if (N <= myNbBuckets) {
if (!myData1)
N = myNbBuckets;
else
return Standard_False;
}
Standard_ASSERT (N > NbBuckets, "NextPrimeForMap failed to return valid number", return Standard_False);
data1 = (NCollection_ListNode **)
myAllocator->Allocate((N+1)*sizeof(NCollection_ListNode *));
memset(data1, 0, (N+1)*sizeof(NCollection_ListNode *));
if (isDouble)
{
data2 = (NCollection_ListNode **)
myAllocator->Allocate((N+1)*sizeof(NCollection_ListNode *));
myAllocator->Allocate((N+1)*sizeof(NCollection_ListNode *));
memset(data2, 0, (N+1)*sizeof(NCollection_ListNode *));
}
else