Author: delphij
Date: Thu Oct 23 18:23:50 2014
New Revision: 273552
URL: https://svnweb.freebsd.org/changeset/base/273552
Log:
Test if 'env' is NULL before doing memset() and strlen(),
the caller may pass NULL to freeenv().
Modified:
head/sys/kern/kern_environment.c
Modified: head/sys/kern/kern_environment.c
==============================================================================
--- head/sys/kern/kern_environment.c Thu Oct 23 18:03:27 2014
(r273551)
+++ head/sys/kern/kern_environment.c Thu Oct 23 18:23:50 2014
(r273552)
@@ -262,7 +262,7 @@ void
freeenv(char *env)
{
- if (dynamic_kenv) {
+ if (dynamic_kenv && env != NULL) {
memset(env, 0, strlen(env));
free(env, M_KENV);
}
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