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-rw-r--r--src/map/clif.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/src/map/clif.c b/src/map/clif.c
index 0a6559c..6124c8f 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -7735,8 +7735,12 @@ void clif_parse_Restart(int fd, struct map_session_data *sd) {
void clif_parse_Wis(int fd, struct map_session_data *sd) { // S 0096 <len>.w <nick>.24B <message>.?B // rewritten by [Yor]
struct map_session_data *dstsd;
int i;
- int gmlen = strlen(RFIFOP(fd,28));
- char gmbuf[512];
+ int gmlen = strlen(RFIFOP(fd,28));
+
+ if (RFIFOW(fd,2)-28 <= 0)
+ return;
+
+ char gmbuf[512];
char *gm_command = ((gmlen+28) > sizeof(gmbuf)) ? (char *) malloc(gmlen + 28) : gmbuf;
// 24+3+(RFIFOW(fd,2)-28)+1 or 24+3+(strlen(RFIFOP(fd,28))+1 (size can be wrong with hacker)