plugins-root/check_dhcp.c - array out of bounds

Coverity 66488 - offer_packet->options has a max size of 312. It was being used in a loop verifying less than 311, but increasing by 2 per loop, causing a possible array index out of bounds. Changed to checking less than max length - 1. - SR

1 files changed, 1 insertions, 1 deletions

diff --git a/plugins-root/check_dhcp.c b/plugins-root/check_dhcp.c
index 1ec5c396..b69a10da 100644
--- a/plugins-root/check_dhcp.c
+++ b/plugins-root/check_dhcp.c
@@ -837,7 +837,7 @@ int add_dhcp_offer(struct in_addr source,dhcp_packet *offer_packet){
                 return ERROR;
 
         /* process all DHCP options present in the packet */
-        for(x=4;x<MAX_DHCP_OPTIONS_LENGTH;){
+        for(x=4;x<MAX_DHCP_OPTIONS_LENGTH-1;){
 
                 if((int)offer_packet->options[x]==-1)
                         break;