From 62d2e5626b88e5abadffadf1d9a9a4471dd8fa41 Mon Sep 17 00:00:00 2001
From: Marcin Wojtas <mw@semihalf.com>
Date: Thu, 8 Jul 2021 22:09:16 +0000
Subject: [PATCH] Fix uninitialized buffer allocation in file_prepare_stream()

The buffer allocated via gs_alloc_bytes() in file_prepare_stream()
remained uninitialized. Zero entire allocated heap memory,
in order to fix that.
---
 base/sfxcommon.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/base/sfxcommon.c b/base/sfxcommon.c
index e506bd64f..9b707efd0 100644
--- a/base/sfxcommon.c
+++ b/base/sfxcommon.c
@@ -201,6 +201,7 @@ file_prepare_stream(const char *fname, uint len, const char *file_access,
         gs_free_object(mem, s, "file_prepare_stream");
         return_error(gs_error_VMerror);
     }
+    memset(buffer, 0, buffer_size);
     if (fname != 0) {
         memcpy(buffer, fname, len);
         buffer[len] = 0;	/* terminate string */
-- 
2.32.0.93.g670b81a890-goog