avcodec/motion_est: Fix mv_penalty table size

Fixes out of array read

Found-by: Tyson Smith <twsmith@mozilla.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

1 files changed, 3 insertions, 3 deletions

diff --git a/libavcodec/ituh263enc.c b/libavcodec/ituh263enc.c
index 03f4011bfa..d9596c9f3b 100644
--- a/libavcodec/ituh263enc.c
+++ b/libavcodec/ituh263enc.c
@@ -45,7 +45,7 @@
 /**
  * Table of number of bits a motion vector component needs.
  */
-static uint8_t mv_penalty[MAX_FCODE+1][MAX_MV*2+1];
+static uint8_t mv_penalty[MAX_FCODE+1][MAX_DMV*2+1];
 
 /**
  * Minimal fcode that a motion vector component would need.
@@ -678,7 +678,7 @@ static av_cold void init_mv_penalty_and_fcode(MpegEncContext *s)
     int mv;
 
     for(f_code=1; f_code<=MAX_FCODE; f_code++){
-        for(mv=-MAX_MV; mv<=MAX_MV; mv++){
+        for(mv=-MAX_DMV; mv<=MAX_DMV; mv++){
             int len;
 
             if(mv==0) len= ff_mvtab[0][1];
@@ -699,7 +699,7 @@ static av_cold void init_mv_penalty_and_fcode(MpegEncContext *s)
                 }
             }
 
-            mv_penalty[f_code][mv+MAX_MV]= len;
+            mv_penalty[f_code][mv+MAX_DMV]= len;
         }
     }