New submission from Todd Fiala: Hi all,
In working on the LLVM/LLDB project, I've been hitting a bug in the embedded interpreter that causes a NULL dereference in the Python readline module. There is a call to the history_get() function with an assumption that it returns a non-NULL value. This is not guaranteed to be true of the history_get function, and causes the readline module to crash when it hits this condition. I'm attaching a patch to the Python 2.7.6 source code that addresses this issue. It adds an explicit NULL test of the history_get() return value before accessing it. This issue was discovered in top of tree LLDB (LLVM.org debugger project). See here for details: http://llvm.org/bugs/show_bug.cgi?id=18841 ---------- files: python_2.7.6_module_readline_null.diff keywords: patch messages: 211252 nosy: tfiala priority: normal severity: normal status: open title: python readline module crashing on NULL access versions: Python 2.7 Added file: http://bugs.python.org/file34086/python_2.7.6_module_readline_null.diff _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue20631> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
