Use size_t instead of int when calling sysctl(3).

Otherwise, it writes sizeof(size_t) bytes to &oldlen, smashing the stack.

1 files changed, 2 insertions, 1 deletions

diff --git a/plugins-root/check_dhcp.c b/plugins-root/check_dhcp.c
index f4c2daf..ad67323 100644
--- a/plugins-root/check_dhcp.c
+++ b/plugins-root/check_dhcp.c
@@ -323,7 +323,8 @@ int get_hardware_address(int sock,char *interface_name){
 #elif defined(__bsd__)
                                                 /* King 2004    see ACKNOWLEDGEMENTS */
 
-        int                     mib[6], len;
+        size_t                  len;
+        int                     mib[6];
         char                    *buf;
         unsigned char           *ptr;
         struct if_msghdr        *ifm;