From: Marc André Tanner <mat@brain-dump.org>
Date: Sun, 11 Mar 2018 08:55:06 +0000 (+0100)
Subject: fix out of bounds write for zero length buffer in gethostname
X-Git-Tag: v1.1.20~110
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=3f6dc30470d5751b83645df180a60cad3e7907ef;p=oweals%2Fmusl.git

fix out of bounds write for zero length buffer in gethostname
---

diff --git a/src/unistd/gethostname.c b/src/unistd/gethostname.c
index f984b7dd..633ef571 100644
--- a/src/unistd/gethostname.c
+++ b/src/unistd/gethostname.c
@@ -8,6 +8,6 @@ int gethostname(char *name, size_t len)
 	if (uname(&uts)) return -1;
 	if (len > sizeof uts.nodename) len = sizeof uts.nodename;
 	for (i=0; i<len && (name[i] = uts.nodename[i]); i++);
-	if (i==len) name[i-1] = 0;
+	if (i && i==len) name[i-1] = 0;
 	return 0;
 }