diff --git a/Misc/NEWS.d/next/Security/2022-11-02-15-11-29.gh-issue-98978.Yl_gFA.rst b/Misc/NEWS.d/next/Security/2022-11-02-15-11-29.gh-issue-98978.Yl_gFA.rst
new file mode 100644
index 00000000000000..aaaeba6a7e61c2
--- /dev/null
+++ b/Misc/NEWS.d/next/Security/2022-11-02-15-11-29.gh-issue-98978.Yl_gFA.rst
@@ -0,0 +1,3 @@
+Fixed a potential use-after-free in applications that call configuration
+functions :c:func:`Py_SetPythonHome`, :c:func:`Py_SetProgramName` or
+(private) ``_Py_SetProgramFullPath`` multiple times.
diff --git a/Python/pathconfig.c b/Python/pathconfig.c
index 69b7e10a3b0288..761185c27c6703 100644
--- a/Python/pathconfig.c
+++ b/Python/pathconfig.c
@@ -261,9 +261,7 @@ Py_SetPythonHome(const wchar_t *home)
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
PyMem_RawFree(_Py_path_config.home);
- if (has_value) {
- _Py_path_config.home = _PyMem_RawWcsdup(home);
- }
+ _Py_path_config.home = has_value ? _PyMem_RawWcsdup(home) : NULL;
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
@@ -282,9 +280,7 @@ Py_SetProgramName(const wchar_t *program_name)
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
PyMem_RawFree(_Py_path_config.program_name);
- if (has_value) {
- _Py_path_config.program_name = _PyMem_RawWcsdup(program_name);
- }
+ _Py_path_config.program_name = has_value ? _PyMem_RawWcsdup(program_name) : NULL;
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
@@ -302,9 +298,7 @@ _Py_SetProgramFullPath(const wchar_t *program_full_path)
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
PyMem_RawFree(_Py_path_config.program_full_path);
- if (has_value) {
- _Py_path_config.program_full_path = _PyMem_RawWcsdup(program_full_path);
- }
+ _Py_path_config.program_full_path = has_value ? _PyMem_RawWcsdup(program_full_path) : NULL;
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
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