Missing Initialization of Resource in Apache Arrow

2022-05-2417:00:40

Google

osv.dev

apache arrow

ubsan errors

memory array

rle null data

parquet

c++

python

ruby

wire transmission

flight

streaming ipc

file formats

EPSS

0.008

Percentile

82.2%

JSON

While investigating UBSAN errors in https://github.com/apache/arrow/pull/5365 it was discovered Apache Arrow versions 0.12.0 to 0.14.1, left memory Array data uninitialized when reading RLE null data from parquet. This affected the C++, Python, Ruby and R implementations. The uninitialized memory could potentially be shared if are transmitted over the wire (for instance with Flight) or persisted in the streaming IPC and file formats.