From: Christian Brauner <christian.brauner@ubuntu.com>
Date: Thu, 2 Mar 2017 23:33:40 +0000 (+0100)
Subject: cgfsng: make trim() safer
X-Git-Tag: lxc-2.1.0~187^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=refs%2Fpull%2F1449%2Fhead;p=thirdparty%2Flxc.git

cgfsng: make trim() safer

Signed-off-by: Christian Brauner <christian.brauner@ubuntu.com>
---

diff --git a/src/lxc/cgroups/cgfsng.c b/src/lxc/cgroups/cgfsng.c
index 2b772e2d4..5ad874e82 100644
--- a/src/lxc/cgroups/cgfsng.c
+++ b/src/lxc/cgroups/cgfsng.c
@@ -986,7 +986,7 @@ static void get_existing_subsystems(char ***klist, char ***nlist)
 static void trim(char *s)
 {
 	size_t len = strlen(s);
-	while (s[len-1] == '\n')
+	while ((len > 1) && (s[len - 1] == '\n'))
 		s[--len] = '\0';
 }