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1275 byte packets is the absolute maximum packet size we're going to support. This makes the encoder and decoder refuse to operate outside of these boundaries.

--- a/libcelt/celt.c

+++ b/libcelt/celt.c

@@ -919,7 +919,7 @@

    int silence=0;

    SAVE_STACK;

-   if (nbCompressedBytes<2 || pcm==NULL)

+   if (nbCompressedBytes<2 || nbCompressedBytes>1275 || pcm==NULL)

      return CELT_BAD_ARG;

    frame_size *= st->upsample;

@@ -2180,7 +2180,7 @@

    SAVE_STACK;

-   if (pcm==NULL)

+   if (len<0 || len>1275 || pcm==NULL)

       return CELT_BAD_ARG;

    frame_size *= st->downsample;