From: Roy Marples <roy@marples.name>
Date: Fri, 7 Feb 2014 21:04:09 +0000 (+0000)
Subject: Ensure fscanf does not overflow.
X-Git-Tag: v6.3.0~28
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=71ddb604c5dac154292fd1e0a282eccd500559f9;p=thirdparty%2Fdhcpcd.git

Ensure fscanf does not overflow.
---

diff --git a/platform-linux.c b/platform-linux.c
index 8f15e975..6fe470c6 100644
--- a/platform-linux.c
+++ b/platform-linux.c
@@ -83,7 +83,7 @@ int
 hardware_platform(char *str, size_t len)
 {
 	FILE *fp;
-	char buf[255];
+	char buf[256];
 
 	if (mproc == NULL) {
 		errno = EINVAL;
@@ -94,9 +94,9 @@ hardware_platform(char *str, size_t len)
 	if (fp == NULL)
 		return -1;
 
-	while (fscanf(fp, "%s : ", buf) != EOF) {
+	while (fscanf(fp, "%255s : ", buf) != EOF) {
 		if (strncmp(buf, mproc, strlen(mproc)) == 0) {
-			fscanf(fp, "%s", buf);
+			fscanf(fp, "%255s", buf);
 			fclose(fp);
 			return snprintf(str, len, ":%s", buf);
 		}