From 58e7f60ac2f1c16db281774709a13181c7613e89 Mon Sep 17 00:00:00 2001
From: Steven Morgan <smorgan@sourcefire.com>
Date: Tue, 3 Mar 2015 16:37:08 -0500
Subject: [PATCH] Apply y0da cryptor patch sent in by Sebastian Andrzej
 Siewior.

---
 libclamav/yc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/libclamav/yc.c b/libclamav/yc.c
index 722c4fc98..5261c0fc4 100644
--- a/libclamav/yc.c
+++ b/libclamav/yc.c
@@ -81,6 +81,7 @@ static int yc_poly_emulator(cli_ctx *ctx, char *base, unsigned int filesize, cha
   unsigned char al;
   unsigned char cl = ecx & 0xff;
   unsigned int j,i;
+  unsigned int max_jmp_loop = 100000;
 
   for(i=0;i<ecx&&i<max_emu;i++) /* Byte looper - Decrypts every byte and write it back */
     {
@@ -103,6 +104,9 @@ static int yc_poly_emulator(cli_ctx *ctx, char *base, unsigned int filesize, cha
             if (yc_bounds_check(ctx, base, filesize, decryptor_offset, j)) {
                 return 2;
             }
+	      if (!max_jmp_loop)
+	          return 2;
+	      max_jmp_loop--;
 	      j = j + decryptor_offset[j];
 	      break;