X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fjpeg2000.c;h=3f50bf9fb3420c35c300a5d004390ced4c4c08b2;hb=2e328a8a38e06e4737bc1253a568558a7c514e77;hp=8e90980976e52772bd215e518a3baf58c615cd3f;hpb=022fa7a24ea8f5000e7b6a50e57cc752f417da47;p=ffmpeg

diff --git a/libavcodec/jpeg2000.c b/libavcodec/jpeg2000.c
index 8e90980976e..3f50bf9fb34 100644
--- a/libavcodec/jpeg2000.c
+++ b/libavcodec/jpeg2000.c
@@ -247,6 +247,11 @@ static void init_band_stepsize(AVCodecContext *avctx,
         }
     }
 
+    if (band->f_stepsize > (INT_MAX >> 15)) {
+        band->f_stepsize = 0;
+        av_log(avctx, AV_LOG_ERROR, "stepsize out of range\n");
+    }
+
     band->i_stepsize = band->f_stepsize * (1 << 15);
 
     /* FIXME: In OpenJPEG code stepsize = stepsize * 0.5. Why?