python3.12/00209-prevent-buffer-overflow-in-zipimport-module.patch

17 lines
500 B
Diff

diff --git a/Modules/zipimport.c b/Modules/zipimport.c
index 06abb31..914bf5d 100644
--- a/Modules/zipimport.c
+++ b/Modules/zipimport.c
@@ -1112,6 +1112,11 @@ get_data(PyObject *archive, PyObject *toc_entry)
}
file_offset += l; /* Start of file data */
+ if (data_size > LONG_MAX - 1) {
+ fclose(fp);
+ PyErr_NoMemory();
+ return NULL;
+ }
bytes_size = compress == 0 ? data_size : data_size + 1;
if (bytes_size == 0)
bytes_size++;