From: Rich Felker <dalias@aerifal.cx>
Date: Sun, 9 Aug 2015 22:51:09 +0000 (+0000)
Subject: fix failure of tempnam to null-terminate result
X-Git-Tag: v1.1.11~7
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=062bb737de06c3906b4b4a07c7fc0fb286287efe;p=oweals%2Fmusl.git

fix failure of tempnam to null-terminate result

tempnam uses an uninitialized buffer which is filled using memcpy and
__randname. It is therefore necessary to explicitly null-terminate it.

based on patch by Felix Janda.
---

diff --git a/src/stdio/tempnam.c b/src/stdio/tempnam.c
index 45a5f266..5a559752 100644
--- a/src/stdio/tempnam.c
+++ b/src/stdio/tempnam.c
@@ -33,6 +33,7 @@ char *tempnam(const char *dir, const char *pfx)
 	s[dl] = '/';
 	memcpy(s+dl+1, pfx, pl);
 	s[dl+1+pl] = '_';
+	s[l] = 0;
 
 	for (try=0; try<MAXTRIES; try++) {
 		__randname(s+l-6);