From: K.Kosako <kosako@sofnec.co.jp>
Date: Tue, 9 Jul 2019 07:50:41 +0000 (+0900)
Subject: check invalid code point value in onigenc_mb2_code_to_mbclen(): fix segmentation... 
X-Git-Tag: v6.9.3~60
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=70e915361f141bbada772ad4aa55cd98fa441fab;p=onig

check invalid code point value in onigenc_mb2_code_to_mbclen(): fix segmentation fault in next_state_class() for invalid code point value in EUC-KR (found by Mark Griffin with libfuzzer program)
---

diff --git a/src/regenc.c b/src/regenc.c
index 6376565..9fab721 100644
--- a/src/regenc.c
+++ b/src/regenc.c
@@ -853,6 +853,8 @@ onigenc_mbn_is_mbc_ambiguous(OnigEncoding enc, OnigCaseFoldType flag,
 extern int
 onigenc_mb2_code_to_mbclen(OnigCodePoint code)
 {
+  if ((code & (~0xffff)) != 0) return ONIGERR_INVALID_CODE_POINT_VALUE;
+
   if ((code & 0xff00) != 0) return 2;
   else return 1;
 }