An issue, also known as DW201703-006, was discovered in libdwarf 2017-03-21. A heap-based buffer over-read in dwarfformsdata() is due to a failure to check a pointer for being in bounds (in a few places in this function) and a failure in a check in dwarfattrlist().

An issue, also known as DW201703-001, was discovered in libdwarf 2017-03-21. In dwarfformsdata() a few data types were not checked for being in bounds, leading to a heap-based buffer over-read.

An issue, also known as DW201703-005, was discovered in libdwarf 2017-03-21. A heap-based buffer over-read in dwarfreadlocexprop() is due to a failure to check a pointer for being in bounds (in a few places in this function).

An issue, also known as DW201703-002, was discovered in libdwarf 2017-03-21. In dwarfdecodesleb128chk() a byte pointer was dereferenced just before it was checked for being in bounds, leading to a heap-based buffer over-read.