void read_sum_head(int f, struct sum_struct *sum)
{
sum->count = read_int(f);
+ if (sum->count < 0) {
+ rprintf(FERROR, "Invalid checksum count %ld [%s]\n",
+ (long)sum->count, who_am_i());
+ exit_cleanup(RERR_PROTOCOL);
+ }
sum->blength = read_int(f);
if (sum->blength < 0 || sum->blength > MAX_BLOCK_SIZE) {
rprintf(FERROR, "Invalid block length %ld [%s]\n",