jbig2_sd_cat(Jbig2Ctx *ctx, int n_dicts, Jbig2SymbolDict **dicts)
jbig2_sd_cat(Jbig2Ctx *ctx, uint32_t n_dicts, Jbig2SymbolDict **dicts)
 {
    uint32_t i, j, k, symbols;
    Jbig2SymbolDict *new_dict = NULL;
 
     /* count the imported symbols and allocate a new array */
     symbols = 0;
    for (i = 0; i < n_dicts; i++)
         symbols += dicts[i]->n_symbols;
 
     /* fill a new array with cloned glyph pointers */
    new_dict = jbig2_sd_new(ctx, symbols);
    if (new_dict != NULL) {
         k = 0;
         for (i = 0; i < n_dicts; i++)
             for (j = 0; j < dicts[i]->n_symbols; j++)
                new_dict->glyphs[k++] = jbig2_image_clone(ctx, dicts[i]->glyphs[j]);
     } else {
         jbig2_error(ctx, JBIG2_SEVERITY_WARNING, -1, "failed to allocate new symbol dictionary");
     }
 
    return new_dict;
 }

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.