 static int smacker_decode_tree(BitstreamContext *bc, HuffContext *hc,
                                uint32_t prefix, int length)
 {
    if (length > SMKTREE_DECODE_MAX_RECURSION) {
        av_log(NULL, AV_LOG_ERROR, "Maximum tree recursion level exceeded.\n");
        return AVERROR_INVALIDDATA;
    }

     if (!bitstream_read_bit(bc)) { // Leaf
         if(hc->current >= 256){
             av_log(NULL, AV_LOG_ERROR, "Tree size exceeded!\n");
            return AVERROR_INVALIDDATA;
        }
        if(length){
            hc->bits[hc->current] = prefix;
            hc->lengths[hc->current] = length;
        } else {
            hc->bits[hc->current] = 0;
            hc->lengths[hc->current] = 0;
        }
        hc->values[hc->current] = bitstream_read(bc, 8);
        hc->current++;
        if(hc->maxlength < length)
            hc->maxlength = length;
        return 0;
    } else { //Node
        int r;
        length++;
        r = smacker_decode_tree(bc, hc, prefix, length);
        if(r)
            return r;
        return smacker_decode_tree(bc, hc, prefix | (1 << (length - 1)), length);
    }
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.