static void getKeyFreqs(redisReply *keys, unsigned long long *freqs) {
    redisReply *reply;
    unsigned int i;

    /* Pipeline OBJECT freq commands */
    for(i=0;i<keys->elements;i++) {
        redisAppendCommand(context, "OBJECT freq %s", keys->element[i]->str);
    }

    /* Retrieve freqs */
    for(i=0;i<keys->elements;i++) {
        if(redisGetReply(context, (void**)&reply)!=REDIS_OK) {
            fprintf(stderr, "Error getting freq for key '%s' (%d: %s)\n",
                keys->element[i]->str, context->err, context->errstr);
            exit(1);
        } else if(reply->type != REDIS_REPLY_INTEGER) {
            if(reply->type == REDIS_REPLY_ERROR) {
                fprintf(stderr, "Error: %s\n", reply->str);
                exit(1);
            } else {
                fprintf(stderr, "Warning: OBJECT freq on '%s' failed (may have been deleted)\n", keys->element[i]->str);
                freqs[i] = 0;
            }
        } else {
            freqs[i] = reply->integer;
        }
        freeReplyObject(reply);
    }
}

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.