1 files changed, 10 insertions, 0 deletions

diff --git a/shell/ash.c b/shell/ash.c
index ad1e5ba7e..6d7066a1b 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -8898,9 +8898,11 @@ tryexec(IF_FEATURE_SH_STANDALONE(int applet_no,) const char *cmd, char **argv, c
 # else
                 if (APPLET_IS_NOEXEC(applet_no)) {
 # endif
+#if !defined(_UCRT)
                         clearenv();
                         while (*envp)
                                 putenv(*envp++);
+#endif
                         popredir(/*drop:*/ 1);
                         run_noexec_applet_and_exit(applet_no, cmd, argv);
                 }
@@ -8973,6 +8975,14 @@ static void shellexec(char *prog, char **argv, const char *path, int idx)
 #if !ENABLE_PLATFORM_MINGW32
         if (strchr(prog, '/') != NULL
 #else
+#if defined(_UCRT)
+        /* Avoid UCRT bug by updating parent's environment and passing a
+         * NULL environment pointer to execve(). */
+        clearenv();
+                while (*envp)
+                        putenv(*envp++);
+        envp = NULL;
+#endif
         if (has_path(prog)
 #endif
 #if ENABLE_FEATURE_SH_STANDALONE