From: Zackery Spytz <zspytz@gmail.com>
Date: Mon, 5 Nov 2018 19:26:40 +0000 (-0700)
Subject: Fix possible crashes in pwdmodule.c. (GH-10331)
X-Git-Tag: v3.8.0a1~574
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=570e371fd6e8615ece9b9e21fbe77149ebeb172e;p=python

Fix possible crashes in pwdmodule.c. (GH-10331)

"p" was not initialized if the first PyMem_RawRealloc() call failed.
---

diff --git a/Modules/pwdmodule.c b/Modules/pwdmodule.c
index 1286e7d5ce..fd11f848b2 100644
--- a/Modules/pwdmodule.c
+++ b/Modules/pwdmodule.c
@@ -145,6 +145,7 @@ pwd_getpwuid(PyObject *module, PyObject *uidobj)
     while(1) {
         buf2 = PyMem_RawRealloc(buf, bufsize);
         if (buf2 == NULL) {
+            p = NULL;
             nomem = 1;
             break;
         }
@@ -227,6 +228,7 @@ pwd_getpwnam_impl(PyObject *module, PyObject *name)
     while(1) {
         buf2 = PyMem_RawRealloc(buf, bufsize);
         if (buf2 == NULL) {
+            p = NULL;
             nomem = 1;
             break;
         }