X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=libavcodec%2Fmagicyuv.c;h=5f09c0be5334cf6bdec3ec0db5dce10726a17ba5;hb=faa5a2181df53b5226f998a20b735798addcd365;hp=6250536da6168f1514902dfd0e38d066a8b9888f;hpb=91f8ccdda0605d480111f7bd3b2e1bcf8d9a1fe0;p=ffmpeg

diff --git a/libavcodec/magicyuv.c b/libavcodec/magicyuv.c
index 6250536da61..5f09c0be533 100644
--- a/libavcodec/magicyuv.c
+++ b/libavcodec/magicyuv.c
@@ -97,6 +97,8 @@ static int huff_build10(VLC *vlc, uint8_t *len)
     for (i = 0; i < 1024; i++) {
         he[i].sym = 1023 - i;
         he[i].len = len[i];
+        if (len[i] == 0)
+            return AVERROR_INVALIDDATA;
     }
     AV_QSORT(he, 1024, HuffEntry, huff_cmp_len10);
 
@@ -127,6 +129,8 @@ static int huff_build(VLC *vlc, uint8_t *len)
     for (i = 0; i < 256; i++) {
         he[i].sym = 255 - i;
         he[i].len = len[i];
+        if (len[i] == 0)
+            return AVERROR_INVALIDDATA;
     }
     AV_QSORT(he, 256, HuffEntry, huff_cmp_len);