fix heap-buffer-overflow

kkos · Aug 13, 2019 · d3e4029 · d3e4029
1 parent fdbbb88
commit d3e4029
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/regexec.c b/src/regexec.c
@@ -4196,6 +4196,7 @@ str_lower_case_match(OnigEncoding enc, int case_fold_flag,
     lowlen = ONIGENC_MBC_CASE_FOLD(enc, case_fold_flag, &p, end, lowbuf);
     q = lowbuf;
     while (lowlen > 0) {
+      if (t >= tend)    return 0;
       if (*t++ != *q++) return 0;
       lowlen--;
     }