mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-23 10:16:01 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 11

Restrict co_code to be under INT_MAX in codeobject (GH-20628)

Browse source
This commit is contained in:
Ammar Askar 2020-06-10 23:31:22 +00:00 • committed by GitHub
parent 1642c0ef75
commit 3b3b83c965
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 11 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

8
Objects/codeobject.c
View file

@ -166,6 +166,14 @@ PyCode_NewWithPosOnlyArgs(int argcount, int posonlyargcount, int kwonlyargcount,
return NULL;
}
/* Make sure that code is indexable with an int, this is
a long running assumption in ceval.c and many parts of
the interpreter. */
if (PyBytes_GET_SIZE(code) > INT_MAX) {
PyErr_SetString(PyExc_OverflowError, "co_code larger than INT_MAX");
return NULL;
}
/* Check for any inner or outer closure references */
n_cellvars = PyTuple_GET_SIZE(cellvars);
if (!n_cellvars && !PyTuple_GET_SIZE(freevars)) {