[New-bugs-announce] [issue34457] Missing NULL check in alias_for_import_name() from Python/ast.c

[Alexey Izbyshev]

New submission from Alexey Izbyshev <izbyshev at ispras.ru>:

The return value of PyUnicode_InternFromString() is dereferenced without checking at https://github.com/python/cpython/blob/ef8861c112ed1dac9351958c121bc24ca4ecdb08/Python/ast.c#L3256

Reported by Svace static analyzer.

----------
components: Interpreter Core
messages: 323854
nosy: izbyshev, serhiy.storchaka
priority: normal
severity: normal
status: open
title: Missing NULL check in alias_for_import_name() from Python/ast.c
type: behavior
versions: Python 2.7, Python 3.4, Python 3.5, Python 3.6, Python 3.7, Python 3.8

_______________________________________
Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue34457>
_______________________________________