This patch was pulled from the p7zip forums at:

This should be part of p7zip 16, once it ships.

Index: p7zip_15.14.1/CPP/7zip/Archive/Udf/UdfIn.cpp

===================================================================

--- p7zip_15.14.1.orig/CPP/7zip/Archive/Udf/UdfIn.cpp

+++ p7zip_15.14.1/CPP/7zip/Archive/Udf/UdfIn.cpp

@@ -389,7 +389,11 @@ HRESULT CInArchive::ReadFileItem(int vol

return S_FALSE;

CFile &file = Files.Back();

const CLogVol &vol = LogVols[volIndex];

- CPartition &partition = Partitions[vol.PartitionMaps[lad.Location.PartitionRef].PartitionIndex];

+ unsigned partitionRef = lad.Location.PartitionRef;

+

+ if (partitionRef >= vol.PartitionMaps.Size())

+ return S_FALSE;

+ CPartition &partition = Partitions[vol.PartitionMaps[partitionRef].PartitionIndex];

UInt32 key = lad.Location.Pos;

UInt32 value;