mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-22 09:45:06 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 13

gh-127208: Reject null character in _imp.create_dynamic() (#127400)

Browse source 
_imp.create_dynamic() now rejects embedded null characters in the
path and in the module name.
This commit is contained in:
Victor Stinner 2024-11-29 16:20:38 +01:00 • committed by GitHub
parent 3afb639f39
commit b14fdadc6c
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 18 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

8
Python/import.c
View file

@ -1157,12 +1157,14 @@ del_extensions_cache_value(struct extensions_cache_value *value)
static void *
hashtable_key_from_2_strings(PyObject *str1, PyObject *str2, const char sep)
{
Py_ssize_t str1_len, str2_len;
const char *str1_data = PyUnicode_AsUTF8AndSize(str1, &str1_len);
const char *str2_data = PyUnicode_AsUTF8AndSize(str2, &str2_len);
const char *str1_data = _PyUnicode_AsUTF8NoNUL(str1);
const char *str2_data = _PyUnicode_AsUTF8NoNUL(str2);
if (str1_data == NULL || str2_data == NULL) {
return NULL;
}
Py_ssize_t str1_len = strlen(str1_data);
Py_ssize_t str2_len = strlen(str2_data);
/* Make sure sep and the NULL byte won't cause an overflow. */
assert(SIZE_MAX - str1_len - str2_len > 2);
size_t size = str1_len + 1 + str2_len + 1;